Huntsman International 10-Q 6 May 21 2021 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 21, 2021
Document Information [Line Items]
Entity Central Index Key	0001089748
Entity Registrant Name	Huntsman International LLC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	333-85141
Entity Address, Address Line One	10003 Woodloch Forest Drive
Entity Address, City or Town	The Woodlands
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77380
City Area Code	281
Local Phone Number	719-6000
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-0630358
Title of 12(b) Security	NONE
Trading Symbol	NONE
Security Exchange Name	NONE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		221,686,798

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	[1]	$ 673	$ 1,593
Accounts and notes receivable	[1]	1,010	902
Accounts receivable from affiliates		12	8
Inventories	[1]	1,006	848
Other current assets		228	217
Total current assets		2,929	3,568
Property, plant and equipment, net	[1]	2,514	2,505
Investment in unconsolidated affiliates		411	373
Intangible assets, net		422	453
Goodwill		739	533
Deferred income taxes		282	288
Operating lease right-of-use assets		432	445
Other noncurrent assets	[1]	571	548
Total assets		8,300	8,713
Current liabilities:
Accounts payable	[1]	909	842
Accounts payable to affiliates		44	34
Accrued liabilities	[1]	505	458
Current portion of debt	[1]	57	593
Current operating lease liabilities	[1]	49	52
Total current liabilities		1,564	1,979
Long-term debt	[1]	1,510	1,528
Deferred income taxes		216	212
Noncurrent operating lease liabilities	[1]	401	411
Other noncurrent liabilities	[1]	875	910
Total liabilities		4,566	5,040
Commitments and contingencies (Notes 15 and 16)
Common stock $0.01 par value, 1,200,000,000 shares authorized, 259,184,140 and 258,520,411 shares issued and 220,712,124 and 220,046,262 shares outstanding, respectively		3	3
Additional paid-in capital		4,085	4,048
Treasury stock, 38,477,091 shares		(731)	(731)
Unearned stock-based compensation		(38)	(19)
Retained earnings		1,603	1,564
Accumulated other comprehensive loss		(1,359)	(1,346)
Total Huntsman Corporation stockholders’ equity		3,563	3,519
Noncontrolling interests in subsidiaries		171	154
Total equity		3,734	3,673
Total liabilities and equity		8,300	8,713
Huntsman International LLC [Member]
Current assets:
Cash and cash equivalents	[1]	667	1,591
Accounts and notes receivable	[1]	1,010	902
Accounts receivable from affiliates		59	47
Inventories	[1]	1,006	848
Other current assets		227	223
Total current assets		2,969	3,611
Property, plant and equipment, net	[1]	2,514	2,505
Investment in unconsolidated affiliates		411	373
Intangible assets, net		422	453
Goodwill		739	533
Deferred income taxes		282	288
Operating lease right-of-use assets		432	445
Other noncurrent assets	[1]	569	548
Total assets		8,338	8,756
Current liabilities:
Accounts payable	[1]	908	842
Accounts payable to affiliates		46	36
Accrued liabilities	[1]	496	455
Current portion of debt	[1]	57	593
Current operating lease liabilities	[1]	49	52
Total current liabilities		1,556	1,978
Long-term debt	[1]	1,510	1,528
Deferred income taxes		217	214
Noncurrent operating lease liabilities	[1]	401	411
Other noncurrent liabilities	[1]	867	900
Total liabilities		4,551	5,031
Commitments and contingencies (Notes 15 and 16)
Retained earnings		1,252	1,203
Accumulated other comprehensive loss		(1,345)	(1,333)
Total equity		3,787	3,725
Total liabilities and equity		8,338	8,756
Members’ equity, 2,728 units issued and outstanding		3,709	3,701
Total Huntsman International LLC members’ equity		3,616	3,571
Noncontrolling interests in subsidiaries		171	154
Total equity		$ 3,787	$ 3,725
[1]	At March 31, 2021 and December 31, 2020, respectively, $8 and $2 of cash and cash equivalents, $10 and $6 of accounts and notes receivable (net), $36 and $38 of inventories, $166 and $167 of property, plant and equipment (net), $22 and $23 of other noncurrent assets, $128 and $119 of accounts payable, $13 each of accrued liabilities, $55 and $47 of current portion of debt, $5 each of current operating lease liabilities, nil and $3 of long-term debt, $21 and $17 of noncurrent operating lease liabilities and $82 each of other noncurrent liabilities from consolidated variable interest entities are included in the respective balance sheet captions above. See "Note 6. Variable Interest Entities."

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Cash and cash equivalents	[1]	$ 673,000	$ 1,593,000
Accounts and notes receivable, allowance for doubtful accounts		26,000	26,000
Accounts and notes receivable, pledged as collateral		245,000	198,000
Accounts and notes receivable	[1]	1,010,000	902,000
Inventories	[1]	1,006,000	848,000
Property, plant and equipment, net	[1]	2,514,000	2,505,000
Other noncurrent assets	[1]	571,000	548,000
Accounts payable	[1]	909,000	842,000
Accrued liabilities	[1]	505,000	458,000
Current portion of debt	[1]	57,000	593,000
Current operating lease liabilities	[1]	49,000	52,000
Long-term debt	[1]	1,510,000	1,528,000
Noncurrent operating lease liabilities	[1]	401,000	411,000
Other noncurrent liabilities	[1]	$ 875,000	$ 910,000
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized (in shares)		1,200,000,000	1,200,000,000
Common stock, shares issued (in shares)		259,184,140	258,520,411
Common stock, shares outstanding (in shares)		220,712,124	220,046,262
Treasury stock, shares (in shares)		38,477,091	38,477,091
Huntsman International LLC [Member]
Cash and cash equivalents	[1]	$ 667,000	$ 1,591,000
Accounts and notes receivable, allowance for doubtful accounts		26,000	26,000
Accounts and notes receivable, pledged as collateral		245,000	198,000
Accounts and notes receivable	[1]	1,010,000	902,000
Inventories	[1]	1,006,000	848,000
Property, plant and equipment, net	[1]	2,514,000	2,505,000
Other noncurrent assets	[1]	569,000	548,000
Accounts payable	[1]	908,000	842,000
Accrued liabilities	[1]	496,000	455,000
Current portion of debt	[1]	57,000	593,000
Current operating lease liabilities	[1]	49,000	52,000
Long-term debt	[1]	1,510,000	1,528,000
Noncurrent operating lease liabilities	[1]	401,000	411,000
Other noncurrent liabilities	[1]	$ 867,000	$ 900,000
Members' equity, units issued (in shares)		2,728	2,728
Members' equity, units outstanding (in shares)		2,728	2,728
Variable Interest Entity, Primary Beneficiary [Member]
Cash and cash equivalents		$ 8,000	$ 2,000
Accounts and notes receivable		10,000	6,000
Inventories		36,000	38,000
Property, plant and equipment, net		166,000	167,000
Other noncurrent assets		22,000	23,000
Accounts payable		128,000	119,000
Accrued liabilities		13,000	13,000
Current portion of debt		55,000	47,000
Current operating lease liabilities		5,000	5,000
Long-term debt		0	3,000
Noncurrent operating lease liabilities		21,000	17,000
Other noncurrent liabilities		82,000	82,000
Variable Interest Entity, Primary Beneficiary [Member] | Huntsman International LLC [Member]
Cash and cash equivalents		8,000	2,000
Accounts and notes receivable		10,000	6,000
Inventories		36,000	38,000
Property, plant and equipment, net		166,000	167,000
Other noncurrent assets		22,000	23,000
Accounts payable		128,000	119,000
Accrued liabilities		13,000	13,000
Current portion of debt		55,000	47,000
Current operating lease liabilities		5,000	5,000
Long-term debt		0	3,000
Noncurrent operating lease liabilities		21,000	17,000
Other noncurrent liabilities		$ 82,000	$ 82,000
[1]	At March 31, 2021 and December 31, 2020, respectively, $8 and $2 of cash and cash equivalents, $10 and $6 of accounts and notes receivable (net), $36 and $38 of inventories, $166 and $167 of property, plant and equipment (net), $22 and $23 of other noncurrent assets, $128 and $119 of accounts payable, $13 each of accrued liabilities, $55 and $47 of current portion of debt, $5 each of current operating lease liabilities, nil and $3 of long-term debt, $21 and $17 of noncurrent operating lease liabilities and $82 each of other noncurrent liabilities from consolidated variable interest entities are included in the respective balance sheet captions above. See "Note 6. Variable Interest Entities."

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Total revenues	[1]	$ 1,837	$ 1,593
Cost of goods sold		1,445	1,296
Gross profit		392	297
Operating expenses:
Selling, general and administrative		207	199
Research and development		38	36
Restructuring, impairment and plant closing costs		24	3
Other operating (income) expense, net		(3)	5
Total operating expenses		266	243
Operating income		126	54
Interest expense, net		(19)	(18)
Equity in income of investment in unconsolidated affiliates		38	2
Equity Securities, FV-NI, Gain (Loss), Total		(19)
Equity Investment, Unrealized Gain (Loss)			(110)
Other income, net		7	10
Income (loss) from continuing operations before income taxes		133	(62)
Income tax expense		(34)	(7)
Income (loss) from continuing operations		99	(69)
Income from discontinued operations, net of tax		1	777
Net income		100	708
Net income attributable to noncontrolling interests		(17)	(3)
Net (loss) income		$ 83	$ 705
Basic income per share:
Income (loss) from continuing operations attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 0.38	$ (0.32)
Income from discontinued operations attributable to Huntsman Corporation common stockholders, net of tax (in dollars per share)		0	3.48
Net income attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 0.38	$ 3.16
Weighted average shares (in shares)		220.4	223.2
Diluted income per share:
Income (loss) from continuing operations attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 0.37	$ (0.32)
Income from discontinued operations attributable to Huntsman Corporation common stockholders, net of tax (in dollars per share)		0	3.48
Net income attributable to Huntsman Corporation common stockholders (in dollars per share)		$ 0.37	$ 3.16
Weighted average shares (in shares)		222.6	223.2
Amounts attributable to Huntsman Corporation common stockholders:
Income (loss) from continuing operations		$ 82	$ (72)
Income from discontinued operations, net of tax		1	777
Net income		83	705
Total revenues	[1]	1,837	1,593
Cost of goods sold		1,445	1,296
Gross profit		392	297
Huntsman International LLC [Member]
Total revenues		1,837	1,593
Cost of goods sold		1,445	1,296
Gross profit		392	297
Operating expenses:
Selling, general and administrative		204	197
Research and development		38	36
Restructuring, impairment and plant closing costs		24	3
Other operating (income) expense, net		(3)	5
Total operating expenses		263	241
Operating income		129	56
Interest expense, net		(19)	(20)
Equity in income of investment in unconsolidated affiliates		38	2
Equity Securities, FV-NI, Gain (Loss), Total		(19)
Equity Investment, Unrealized Gain (Loss)			(110)
Other income, net		7	9
Income (loss) from continuing operations before income taxes		136	(63)
Income tax expense		(35)	(7)
Income (loss) from continuing operations		101	(70)
Income from discontinued operations, net of tax		1	777
Net income		102	707
Net income attributable to noncontrolling interests		(17)	(3)
Net (loss) income		85	704
Amounts attributable to Huntsman Corporation common stockholders:
Total revenues		1,837	1,593
Cost of goods sold		1,445	1,296
Gross profit		392	297
Third Party Customers [Member]
Total revenues		1,802	1,549
Amounts attributable to Huntsman Corporation common stockholders:
Total revenues		1,802	1,549
Third Party Customers [Member] | Huntsman International LLC [Member]
Total revenues		1,802	1,549
Amounts attributable to Huntsman Corporation common stockholders:
Total revenues		1,802	1,549
Related Party Customers [Member]
Total revenues		35	44
Amounts attributable to Huntsman Corporation common stockholders:
Total revenues		35	44
Related Party Customers [Member] | Huntsman International LLC [Member]
Total revenues		35	44
Amounts attributable to Huntsman Corporation common stockholders:
Total revenues		$ 35	$ 44
[1]	Geographic information for revenues is based upon countries into which product is sold.

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income	$ 100	$ 708
Other comprehensive loss, net of tax:
Foreign currency translations adjustments	(32)	(73)
Pension and other postretirement benefits adjustments	19	52
Other comprehensive loss, net of tax	(13)	(21)
Comprehensive income	87	687
Comprehensive income attributable to noncontrolling interests	(17)	(3)
Comprehensive income	70	684
Net income	100	708
Huntsman International LLC [Member]
Net income	102	707
Other comprehensive loss, net of tax:
Foreign currency translations adjustments	(31)	(73)
Pension and other postretirement benefits adjustments	19	53
Other comprehensive loss, net of tax	(12)	(20)
Comprehensive income	90	687
Comprehensive income attributable to noncontrolling interests	(17)	(3)
Comprehensive income	73	684
Net income	$ 102	$ 707

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Huntsman International LLC [Member]Common Stock Outstanding [Member]	Huntsman International LLC [Member]Common Stock [Member]	Huntsman International LLC [Member]Retained Earnings [Member]	Huntsman International LLC [Member]AOCI Attributable to Parent [Member]	Huntsman International LLC [Member]Noncontrolling Interest [Member]	Huntsman International LLC [Member]	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Deferred Compensation, Share-based Payments [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Beginning balance (in shares) at Dec. 31, 2019	2,728						224,295,868
Beginning balance at Dec. 31, 2019		$ 3,675	$ 312	$ (1,352)	$ 137	$ 2,772		$ 3	$ 4,008	$ (635)	$ (17)	$ 690	$ (1,362)	$ 137	$ 2,824
Net income		0	704	0	3	707		0	0	0	0	705	0	3	708
Other comprehensive loss		0	0	(20)	0	(20)		0	0	0	0	0	(21)	0	(21)
Issuance of nonvested stock awards								0	18	0	(18)	0	0	0	0
Vesting of stock awards (in shares)							943,026
Vesting of stock awards								0	4	0	0	0	0	0	4
Recognition of stock-based compensation								0	2	0	5	0	0	0	7
Repurchase and cancellation of stock awards (in shares)							(283,975)
Repurchase and cancellation of stock awards								0	0	0	0	(6)	0	0	(6)
Stock options exercised (in shares)							57,209
Stock options exercised								0	2	0	0	(2)	0	0	0
Dividends declared on common stock ($0.1625 per share)								0	0	0	0	(37)	0	0	$ (37)
Treasury stock repurchased (in shares)							(5,364,519)								(5,364,519)
Treasury stock repurchased								0	0	(96)	0	0	0	0	$ (96)
Dividends paid to parent		0	(37)	0	0	(37)
Contribution from parent		6	0	0	0	6
Ending balance (in shares) at Mar. 31, 2020	2,728						219,647,609
Ending balance at Mar. 31, 2020		3,681	979	(1,372)	140	3,428		3	4,034	(731)	(30)	1,350	(1,383)	140	$ 3,383
Beginning balance (in shares) at Dec. 31, 2020	2,728						220,046,262								220,046,262
Beginning balance at Dec. 31, 2020		3,701	1,203	(1,333)	154	3,725		3	4,048	(731)	(19)	1,564	(1,346)	154	$ 3,673
Net income		0	85	0	17	102		0	0	0	0	83	0	17	100
Other comprehensive loss		0	0	(12)	0	(12)		0	0	0	0	0	(13)	0	(13)
Issuance of nonvested stock awards								0	25	0	(25)	0	0	0	0
Vesting of stock awards (in shares)							664,818
Vesting of stock awards								0	5	0	0	0	0	0	5
Recognition of stock-based compensation								0	2	0	6	0	0	0	8
Repurchase and cancellation of stock awards (in shares)							(202,961)
Repurchase and cancellation of stock awards								0	0	0	0	(6)	0	0	$ (6)
Stock options exercised (in shares)							204,005								275,000
Stock options exercised								0	5	0	0	(2)	0	0	$ 3
Dividends declared on common stock ($0.1625 per share)								0	0	0	0	(36)	0	0	$ (36)
Dividends paid to parent		0	(36)	0	0	(36)
Contribution from parent		8	0	0	0	8
Ending balance (in shares) at Mar. 31, 2021	2,728						220,712,124								220,712,124
Ending balance at Mar. 31, 2021		$ 3,709	$ 1,252	$ (1,345)	$ 171	$ 3,787		$ 3	$ 4,085	$ (731)	$ (38)	$ 1,603	$ (1,359)	$ 171	$ 3,734

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Dividends declared on common stock, per share (in dollars per share)	$ 0.1625	$ 0.1625

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating Activities:
Net income	$ 100	$ 708
Less: Income from discontinued operations, net of tax	(1)	(777)
Income (loss) from continuing operations	99	(69)
Adjustments to reconcile income (loss) from continuing operations to net cash used in operating activities from continuing operations:
Equity in income of investment in unconsolidated affiliates	(38)	(2)
Unrealized losses on fair value adjustments to Venator investment	19
Unrealized losses on fair value adjustments to Venator investment		110
Depreciation and amortization	74	67
Noncash lease expense	17	15
Noncash restructuring and impairment charges	8	0
Deferred income taxes	0	(2)
Stock-based compensation	9	7
Other, net	2	(1)
Changes in operating assets and liabilities:
Accounts and notes receivable	(117)	(34)
Inventories	(156)	(92)
Prepaid expenses	6	6
Other current assets	(16)	1
Other noncurrent assets	(30)	(7)
Accounts payable	94	61
Accrued liabilities	20	(44)
Taxes paid on sale of Chemical Intermediates Businesses	0	(2)
Other noncurrent liabilities	(7)	(54)
Net cash used in operating activities from continuing operations	(16)	(40)
Net cash used in operating activities from discontinued operations	(1)	(35)
Net cash used in operating activities	(17)	(75)
Investing Activities:
Capital expenditures	(98)	(61)
Cash received from sale of businesses	15	1,915
Acquisition of businesses, net of cash acquired	(240)	(346)
Other, net	0	3
Net cash (used in) provided by investing activities	(323)	1,511
Financing Activities:
Net borrowings (repayments) on revolving loan facilities	9	(158)
Repayments of long-term debt	(548)	0
Repayments of notes payable	0	(32)
Dividends paid to noncontrolling interests	0	(23)
Dividends paid to common stockholders	(37)	(37)
Repurchase and cancellation of stock awards	(6)	(6)
Repurchase of common stock	0	(96)
Other, net	3	(2)
Net cash used in financing activities	(579)	(354)
Effect of exchange rate changes on cash	(1)	(13)
(Decrease) increase in cash, cash equivalents and restricted cash	(920)	1,069
Cash, cash equivalents and restricted cash at beginning of period	1,593	525
Cash, cash equivalents and restricted cash at end of period	673	1,594
Supplemental cash flow information:
Cash paid for interest	16	5
Cash paid for income taxes	8	36
Huntsman International LLC [Member]
Operating Activities:
Net income	102	707
Less: Income from discontinued operations, net of tax	(1)	(777)
Income (loss) from continuing operations	101	(70)
Adjustments to reconcile income (loss) from continuing operations to net cash used in operating activities from continuing operations:
Equity in income of investment in unconsolidated affiliates	(38)	(2)
Unrealized losses on fair value adjustments to Venator investment	19
Unrealized losses on fair value adjustments to Venator investment		110
Depreciation and amortization	73	67
Noncash lease expense	17	15
Noncash restructuring and impairment charges	8	0
Deferred income taxes	0	(1)
Other, net	1	1
Noncash compensation	8	6
Changes in operating assets and liabilities:
Accounts and notes receivable	(117)	(34)
Inventories	(156)	(92)
Prepaid expenses	6	6
Other current assets	(9)	0
Other noncurrent assets	(30)	(7)
Accounts payable	93	59
Accrued liabilities	14	(44)
Taxes paid on sale of Chemical Intermediates Businesses	0	(2)
Other noncurrent liabilities	(7)	(54)
Net cash used in operating activities from continuing operations	(17)	(42)
Net cash used in operating activities from discontinued operations	(1)	(35)
Net cash used in operating activities	(18)	(77)
Investing Activities:
Capital expenditures	(98)	(61)
Cash received from sale of businesses	15	1,915
Acquisition of businesses, net of cash acquired	(240)	(346)
Other, net	0	3
Net cash (used in) provided by investing activities	(330)	1,790
(Increase) decrease in receivable from affiliate	(7)	279
Financing Activities:
Net borrowings (repayments) on revolving loan facilities	9	(158)
Repayments of long-term debt	(548)	0
Repayments of notes payable	0	(32)
Dividends paid to noncontrolling interests	0	(23)
Other, net	0	(2)
Net cash used in financing activities	(575)	(631)
Effect of exchange rate changes on cash	(1)	(13)
(Decrease) increase in cash, cash equivalents and restricted cash	(924)	1,069
Cash, cash equivalents and restricted cash at beginning of period	1,591	525
Cash, cash equivalents and restricted cash at end of period	667	1,594
Repayments of notes payable to affiliate	0	(380)
Dividends paid to parent	(36)	(36)
Supplemental cash flow information:
Cash paid for interest	16	5
Cash paid for income taxes	$ 8	$ 36

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Capital Expenditures Incurred but Not yet Paid	$ 54	$ 59
Huntsman International LLC [Member]
Capital Expenditures Incurred but Not yet Paid	$ 54	$ 59

Note 1 - General

Note 1 - General	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Nature of Operations [Text Block]	1. ​ C ertain efinitions ​ For convenience in this report, the terms “Company,” “Huntsman,” “our,” “us” or “we” may ​ In this report, we may may ​ I nterim inancial tatements ​ Our unaudited interim condensed consolidated financial statements and Huntsman International’s unaudited interim condensed consolidated financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP” or “U.S. GAAP”) and in management’s opinion reflect all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of results of operations, comprehensive income (loss), financial position and cash flows for the periods presented. Results for interim periods are not 10 December 31, 2020 ​ D escription of usinesses ​ We are a global manufacturer of differentiated organic chemical products. We operate in four ​ We operate our businesses through Huntsman International, our wholly-owned subsidiary. Huntsman International is a Delaware limited liability company and was formed in 1999. H untsman orporation and untsman nternational inancial tatements ​ Except where otherwise indicated, these notes relate to the condensed consolidated financial statements for both our Company and Huntsman International. The differences between our financial statements and Huntsman International’s financial statements relate primarily to the following: ​ ● purchase accounting recorded at our Company for the 2003 2005; ​ ● the different capital structures. ​ ​ P rinciples of onsolidation ​ Our condensed consolidated financial statements include the accounts of our wholly-owned and majority-owned subsidiaries and any variable interest entities for which we are the primary beneficiary. Intercompany accounts and transactions have been eliminated. ​ R ecl a ss ifications Certain amounts in the condensed consolidated financial statements for the prior period have been reclassified to conform with the current presentation. R ecent evelopments Dividend Increase On April 28, 2021, Acquisition of Gabriel Performance Products On January 15, 2021, 3. Redemption of the 2021 On January 15, 2021, € 445 2021 “2021 not first 2021 8. U se of stimates ​ The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Note 2 - Recently Issued Accoun

Note 2 - Recently Issued Accounting Pronouncements	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	2. A ccounting ronouncements Dopted uring 2021 ​ We adopted the following accounting pronouncement during 2021, not ● Financial Accounting Standards Board Accounting Standards Update No. 2021 01, Reference Rate Reform (Topic 848 ​

Note 3 - Business Combinations

Note 3 - Business Combinations and Acquisitions	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Business Combination Disclosure [Text Block]	3. A cquisition of g aBRIEL erformance roducts As discussed in “Note 1. January 15, 2021, three March 31, 2021 We have accounted for the Gabriel Acquisition using the acquisition method. As such, we analyzed the fair value of tangible and intangible assets acquired and liabilities assumed. The preliminary allocation of acquisition cost to the assets acquired and liabilities assumed is summarized as follows (dollars in millions): Fair value of assets acquired and liabilities assumed: Cash paid for the Gabriel Acquisition $ 249 Cash $ 9 Accounts receivable 13 Inventories 26 Property, plant and equipment 23 Intangible assets 16 Goodwill 172 Accounts payable (7 ) Accrued liabilities (2 ) Deferred income taxes (1 ) Total fair value of net assets acquired $ 249 The acquisition cost allocation is preliminary pending final determination of the fair value of assets acquired and liabilities assumed, including final valuation of certain liabilities, property, plant and equipment, intangible assets, leases and deferred taxes. Intangible assets acquired included in this preliminary allocation consist primarily of trademarks, technology and trade secrets. The applicable amortization periods are still being assessed. For purposes of this preliminary allocation of fair value, we have assigned any excess of the acquisition cost over the estimated preliminary fair value to goodwill. The estimated goodwill recognized is attributable primarily to projected future profitable growth in our Advanced Materials specialty portfolio and synergies. We expect that a portion of the estimated goodwill arising from the acquisition will be deductible for income tax purposes, but the amount is still being assessed. It is possible that material changes to this preliminary allocation of acquisition cost could occur. The acquired business had revenues and net income of $23 million and $4 million, respectively, for the period from the date of acquisition to March 31, 2021. A cquisition of hermoset pecialties ​ On May 18, 2020, We have accounted for the CVC Thermoset Specialties Acquisition using the acquisition method. As such, we analyzed the fair value of tangible and intangible assets acquired and liabilities assumed. The preliminary allocation of acquisition cost to the assets acquired and liabilities assumed is summarized as follows (dollars in millions): Fair value of assets acquired and liabilities assumed: Cash paid for the CVC Thermoset Specialties Acquisition $ 304 Accounts receivable $ 12 Inventories 37 Property, plant and equipment 67 Intangible assets 117 Goodwill 120 Accounts payable (7 ) Accrued liabilities (1 ) Deferred income taxes (41 ) Total fair value of net assets acquired $ 304 ​ The acquisition cost allocation is preliminary pending final determination of the fair value of assets acquired and liabilities assumed, primarily relating to the final valuation of certain liabilities and deferred taxes. Intangible assets acquired included in this preliminary allocation consist primarily of trademarks, trade secrets and customer relationships, which are predominantly being amortized over a period of 20 years. For purposes of this preliminary allocation of fair value, we have assigned any excess of the acquisition cost over the estimated preliminary fair value to goodwill. The estimated goodwill recognized is attributable primarily to projected future profitable growth in our Advanced Materials specialty portfolio and synergies. We expect that none A cquisition of cynene apolla ​ On February 20, 2020, We have accounted for the Icynene-Lapolla Acquisition using the acquisition method. As such, we analyzed the fair value of tangible and intangible assets acquired and liabilities assumed. The allocation of acquisition cost to the assets acquired and liabilities assumed is summarized as follows (dollars in millions): ​ Fair value of assets acquired and liabilities assumed: Cash paid for the Icynene-Lapolla Acquisition in Q1 2020 $ 353 Cash $ 7 Accounts receivable 36 Inventories 32 Prepaid expenses and other current assets 2 Property, plant and equipment 9 Intangible assets 130 Goodwill 167 Other noncurrent assets 4 Accounts payable (14 ) Accrued liabilities (11 ) Deferred income taxes (9 ) Total fair value of net assets acquired $ 353 ​ As a result of the finalization of the valuation of the assets and liabilities, reallocations were made during the first 2021 None ​ P RO ORMA NFORMATION FOR CQUISITIONS If the Gabriel Acquisition, CVC Thermoset Specialties Acquisition and the Icynene-Lapolla Acquisition were to have occurred on January 1, 2020 ​ Three months ended March 31, 2021(1) 2020 Revenues $ 1,841 $ 1,675 Net income 88 705 Net income attributable to Huntsman Corporation 71 702 ​ Three months ended March 31, 2021(1) 2020 Revenues $ 1,841 $ 1,675 Net income 90 704 Net income attributable to Huntsman International 73 701 ( 1 Includes pro forma information for the Gabriel Acquisition only.

Note 4 - Discontinued Operation

Note 4 - Discontinued Operations and Business Dispositions	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	4. S aLE o f enator nterEST On December 23, 2020, no June 23, 2023 not For the three March 31, 2021 2020 Summarized financial information of Venator for the three March 31, 2020 Three months ended March 31, 2020 Revenues $ 532 Gross profit 61 Income from continuing operations 8 Net income 8 Net income attributable to Venator 7 S ale of hemical ntermediates usinesses ​ On January 3, 2020, first 2020. The following table reconciles major line items constituting pretax income of discontinued operations to after-tax income of discontinued operations as presented in our condensed consolidated statements of operations (dollars in millions): Three months ended March 31, 2020 Major line items constituting pretax income of discontinued operations(1): Trade sales, services and fees, net(2) $ 6 Cost of goods sold(2) 9 Gain on sale of the Chemical Intermediates Businesses 990 Insurance proceeds 28 Income from discontinued operations before income taxes 1,015 Income tax expense (238 ) Net income attributable to discontinued operations $ 777 ( 1 Discontinued operations include our Chemical Intermediates Businesses, our Australian styrenics operations and our North American polymers and base chemicals operations for all periods presented. ​ ( 2 Includes eliminations of trade sales, services and fees, net and cost of sales between continuing operations and discontinued operations. ​ ​

Note 5 - Inventories

Note 5 - Inventories	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Inventory Disclosure [Text Block]	5. ​ Inventories are stated at the lower of cost or market, with cost determined using LIFO, first first ​ March 31, December 31, 2021 2020 Raw materials and supplies $ 245 $ 180 Work in progress 47 44 Finished goods 745 651 Total 1,037 875 LIFO reserves (31 ) (27 ) Net inventories $ 1,006 $ 848 ​ As of March 31, 2021 December 31, 2020 ​

Note 6 - Variable Interest Enti

Note 6 - Variable Interest Entities	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Variable Interest Entity Disclosure [Text Block]	6. ​ We evaluate our investments and transactions to identify variable interest entities for which we are the primary beneficiary. We hold a variable interest in the following joint ventures for which we are the primary beneficiary: ​ ● Rubicon LLC is our 50%-owned joint venture with Lanxess that manufactures products for our Polyurethanes and Performance Products segments. ​ ● Arabian Amines Company is our 50%-owned joint venture with Zamil group that manufactures products for our Performance Products segment. ​ During the three 2021 no ​ Creditors of these entities have no 8. March 31, 2021 ​ The following table summarizes the carrying amount of our variable interest entities’ assets and liabilities included in our condensed consolidated balance sheet as of March 31, 2021 December 31, 2020 ​ March 31, December 31, 2021 2020 Current assets $ 56 $ 49 Property, plant and equipment, net 166 167 Operating lease right-of-use assets 27 22 Other noncurrent assets 152 138 Deferred income taxes 30 30 Total assets $ 431 $ 406 Current liabilities $ 201 $ 183 Long-term debt — 3 Noncurrent operating lease liabilities 21 17 Other noncurrent liabilities 82 82 Deferred income taxes 1 1 Total liabilities $ 305 $ 286 The revenues, income from continuing operations before income taxes and net cash provided by operating activities for our variable interest entities for the three March 31, 2021 2020 ​ Three months ended March 31, 2021 2020 Revenues $ — $ — Income from continuing operations before income taxes — 1 Net cash provided by operating activities 4 6 ​ ​

Note 7 - Restructuring, Impairm

Note 7 - Restructuring, Impairment and Plant Closing Costs	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	7. As of March 31, 2021 December 31, 2020, Workforce reductions Demolition and decommissioning Non-cancelable lease and contract termination costs Other restructuring costs Total Accrued liabilities as of January 1, 2021 $ 29 $ — $ 2 $ — $ 31 2021 charges for 2020 and prior initiatives 12 — — 2 14 2021 charges for 2021 initiatives 2 — — — 2 2021 payments for 2020 and prior initiatives (5 ) — — (2 ) (7 ) Accrued liabilities as of March 31, 2021 $ 38 $ — $ 2 $ — $ 40 Details with respect to our reserves for restructuring, impairment and plant closing costs by segment and initiative are provided below (dollars in millions): Performance Advanced Textile Corporate Polyurethanes Products Materials Effects and Other Total Accrued liabilities as of January 1, 2021 $ 12 $ 2 $ 9 $ 8 $ — $ 31 2021 charges (credits) for 2020 and prior initiatives 1 — (1 ) — 14 14 2021 charges for 2021 initiatives — — 2 — — 2 2021 payments for 2020 and prior initiatives (2 ) (1 ) (2 ) (1 ) (1 ) (7 ) Accrued liabilities as of March 31, 2021 $ 11 $ 1 $ 8 $ 7 $ 13 $ 40 Current portion of restructuring reserves $ 11 $ 1 $ 5 $ 4 $ 5 $ 26 Long-term portion of restructuring reserves — — 3 3 8 14 Details with respect to cash and noncash restructuring charges from continuing operations for the three March 31, 2021 2020 Three months ended March 31, 2021 2020 Cash charges: 2021 charges for 2020 and prior initiatives $ 14 $ — 2021 charges for 2021 initiatives 2 — 2020 charges for 2019 and prior initiatives — 1 2020 charges for 2020 initiatives — 2 Noncash charges: Other noncash charges 8 — Total restructuring, impairment and plant closing costs $ 24 $ 3 ​ 2021 R estructuring ctivities Beginning in the first 2021, $14 first 2021 2023. Beginning in the third 2020, first 2021 2021. 2020 R estructuring ctivities During the first 2020, $2 three March 31, 2020,

Note 8 - Debt

Note 8 - Debt	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	8. ​ Outstanding debt, net of debt issuance costs, consisted of the following (dollars in millions): ​ March 31, December 31, 2021 2020 Senior Credit Facilities: Revolving facility $ — $ — Amounts outstanding under A/R programs — — Senior notes 1,489 2,047 Variable interest entities 55 50 Other 23 24 Total debt $ 1,567 $ 2,121 Total current portion of debt $ 57 $ 593 Long-term portion of debt 1,510 1,528 Total debt $ 1,567 $ 2,121 ​ D irect and ubsidiary ebt ​ Huntsman Corporation’s direct debt and guarantee obligations consist of a guarantee of certain indebtedness incurred from time to time to finance certain insurance premiums. Substantially all of our other debt, including the facilities described below, has been incurred by our subsidiaries (primarily Huntsman International). Huntsman Corporation is not ​ Certain of our subsidiaries have third third ​ Debt Issuance Costs ​ We record debt issuance costs related to a debt liability on the balance sheet as a reduction to the face amount of that debt liability. For March 31, 2021 December 31, 2020 ​ Revolving Credit Facility ​ As of March 31, 2021 ​ Unamortized Discounts and Committed Principal Debt Issuance Carrying Facility Amount Outstanding Costs Value Interest Rate(2) Maturity Revolving Credit Facility $ 1,200 $ — (1) $ — (1) $ — (1) USD LIBOR plus 1.50% 2023 ( 1 On March 31, 2021 ​ ( 2 Interest rates on borrowings under the Revolving Credit Facility vary based on the type of loan and Huntsman International’s debt ratings. The then applicable interest rate as of March 31, 2021 ​ A/R Programs ​ Our U.S. accounts receivable securitization program (“U.S. A/R Program”) and our European accounts receivable securitization program (“EU A/R Program” and collectively with the U.S. A/R Program, “A/R Programs”) are structured so that we transfer certain of our trade receivables to the U.S. special purpose entity (“U.S. SPE”) and the European special purpose entity (“EU SPE”) in transactions intended to be true sales or true contributions. The receivables collateralize debt incurred by the U.S. SPE and the EU SPE. ​ Information regarding our A/R Programs as of March 31, 2021 ​ Maximum Funding Amount Facility Maturity Availability (1) Outstanding Interest Rate (2) U.S. A/R Program April 2022 $ 150 $ — (3) Applicable rate plus 0.90% EU A/R Program April 2022 € 100 € — Applicable rate plus 1.30% (or approximately $118) ( 1 The amount of actual availability under our A/R Programs may ​ ( 2 The applicable rate for our U.S. A/R Program is defined by the lender as USD LIBOR. The applicable rate for our EU A/R Program is either GBP LIBOR, USD LIBOR or EURIBOR. ​ ( 3 As of March 31, 2021 ​ As of March 31, 2021 December 31, 2020 Senior Notes ​ On January 15, 2021, € 445 2021 not first 2021 Note Payable from Huntsman International to Huntsman Corporation ​ During the first 2020, ​ C ompliance ith ovenants ​ We believe that we are in compliance with the covenants contained in the agreements governing our material debt instruments, including our Revolving Credit Facility, our A/R Programs and our senior notes.​

Note 9 - Derivative Instruments

Note 9 - Derivative Instruments and Hedging Activities	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	9. ​ We are exposed to market risks, such as changes in interest rates, foreign exchange rates and commodity prices. From time to time, we enter into transactions, including transactions involving derivative instruments, to manage certain of these exposures. We also hedge our net investment in certain European operations. ​ Our revenues and expenses are denominated in various foreign currencies, and our cash flows and earnings are thus subject to fluctuations due to exchange rate variations. From time to time, we may may one not March 31, 2021 ​ From time to time, we may We review our non-U.S. dollar denominated debt and derivative instruments to determine the appropriate amounts designated as hedges. As of March 31, 2021 € 155 three March 31, 2021 March 31, 2020

Note 10 - Fair Value

Note 10 - Fair Value	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	10. ​ The fair values of financial instruments were as follows (dollars in millions): ​ March 31, 2021 December 31, 2020 Carrying Estimated Carrying Estimated Value Fair Value Value Fair Value Non-qualified employee benefit plan investments $ 21 $ 21 $ 26 $ 26 Investment in Venator 45 45 32 32 Option agreement for remaining Venator shares (25 ) (25 ) 11 11 Long-term debt (including current portion) (1,567 ) (1,729 ) (2,121 ) (2,334 ) ​ The carrying amounts reported in the balance sheets of cash and cash equivalents, accounts receivable and accounts payable approximate fair value because of the immediate or short-term maturity of these financial instruments. Our investment in Venator is marked to fair value, which is obtained through market observable pricing using prevailing market prices (Level 1 2 4. 1 1 March 31, 2021 December 31, 2020. not not March 31, 2021, may ​ During the three March 31, 2021 no 3 no 3 ​

Note 11 - Revenue Recognition

Note 11 - Revenue Recognition	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	11. The following tables disaggregate our revenue from continuing operations by major source for the three March 31, 2021 2020 ​ Performance Advanced Textile Corporate and 2021 Polyurethanes Products Materials Effects Eliminations Total Primary Geographic Markets(1) U.S. and Canada $ 371 $ 120 $ 83 $ 13 $ (3 ) $ 584 Europe 279 77 99 31 (3 ) 483 Asia Pacific 336 91 71 119 — 617 Rest of world 82 17 25 30 (1 ) 153 $ 1,068 $ 305 $ 278 $ 193 $ (7 ) $ 1,837 Major Product Groupings MDI urethanes $ 1,068 $ 1,068 Differentiated $ 305 305 Specialty $ 245 245 Non-specialty 33 33 Textile chemicals and dyes $ 193 193 Eliminations $ (7 ) (7 ) $ 1,068 $ 305 $ 278 $ 193 $ (7 ) $ 1,837 ​ Performance Advanced Textile Corporate and 2020 Polyurethanes Products Materials Effects Eliminations Total Primary Geographic Markets(1) U.S. and Canada $ 370 $ 129 $ 63 $ 17 $ (7 ) $ 572 Europe 245 74 101 32 (1 ) 451 Asia Pacific 199 70 56 103 — 428 Rest of world 74 19 21 28 — 142 $ 888 $ 292 $ 241 $ 180 $ (8 ) $ 1,593 Major Product Groupings MDI urethanes $ 888 $ 888 Differentiated $ 292 292 Specialty $ 211 211 Non-specialty 30 30 Textile chemicals and dyes $ 180 180 Eliminations $ (8 ) (8 ) $ 888 $ 292 $ 241 $ 180 $ (8 ) $ 1,593 ​ ( 1 Geographic information for revenues is based upon countries into which product is sold.

Note 12 - Employee Benefit Plan

Note 12 - Employee Benefit Plans	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	12. ​ Components of the net periodic benefit costs from continuing operations for the three March 31, 2021 2020 ​ Huntsman Corporation ​ Other Postretirement Defined Benefit Plans Benefit Plans Three months Three months ended ended March 31, March 31, 2021 2020 2021 2020 Service cost $ 14 $ 14 $ — $ — Interest cost 12 15 — 1 Expected return on assets (42 ) (43 ) — — Amortization of prior service benefit (2 ) (2 ) (1 ) (1 ) Amortization of actuarial loss 23 20 1 — Settlement loss 3 — — — Net periodic benefit cost $ 8 $ 4 $ — $ — ​ Huntsman International ​ Other Postretirement Defined Benefit Plans Benefit Plans Three months Three months ended ended March 31, March 31, 2021 2020 2021 2020 Service cost $ 14 $ 14 $ — $ — Interest cost 12 15 — 1 Expected return on assets (42 ) (43 ) — — Amortization of prior service benefit (2 ) (2 ) (1 ) (1 ) Amortization of actuarial loss 24 21 1 — Settlement loss 3 — — — Net periodic benefit cost $ 9 $ 5 $ — $ — ​ During the three March 31, 2021 2020 2021 ​

Note 13 - Huntsman Corporation

Note 13 - Huntsman Corporation Stockholders' Equity	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	13. ​ S hare epurchase rogram ​ On February 7, 2018 May 3, 2018, may may first 2020, first 2020, 19. ​ D ividends on ommon tock ​ During the quarters ended March 31, 2021 March 31, 2020

Note 14 - Accumulated Other Com

Note 14 - Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	14. ​ The components of other comprehensive (loss) income and changes in accumulated other comprehensive loss by component were as follows (dollars in millions): ​ Huntsman Corporation ​ Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2021 $ (328 ) $ (1,050 ) $ 8 $ 4 $ (1,366 ) $ 20 $ (1,346 ) Other comprehensive loss before reclassifications, gross (32 ) — — — (32 ) — (32 ) Tax expense — — — — — — — Amounts reclassified from accumulated other comprehensive loss, gross(c) — 24 — — 24 — 24 Tax expense — (5 ) — — (5 ) — (5 ) Net current-period other comprehensive (loss) income (32 ) 19 — — (13 ) — (13 ) Ending balance, March 31, 2021 $ (360 ) $ (1,031 ) $ 8 $ 4 $ (1,379 ) $ 20 $ (1,359 ) (a) Amounts are net of tax of $56 March 31, 2021 January 1, 2021 ​ (b) Amounts are net of tax of $148 and $153 as of March 31, 2021 January 1, 2021 ​ (c) See table below for details about these reclassifications. ​ Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2020 $ (369 ) $ (1,031 ) $ 8 $ 4 $ (1,388 ) $ 26 $ (1,362 ) Other comprehensive (loss) income before reclassifications, gross (67 ) 8 — — (59 ) — (59 ) Tax expense (6 ) — — — (6 ) — (6 ) Amounts reclassified from accumulated other comprehensive loss, gross(c) — 58 — — 58 — 58 Tax expense — (14 ) — — (14 ) — (14 ) Net current-period other comprehensive (loss) income (73 ) 52 — — (21 ) — (21 ) Ending balance, March 31, 2020 $ (442 ) $ (979 ) $ 8 $ 4 $ (1,409 ) $ 26 $ (1,383 ) (a) Amounts are net of tax of $74 and $68 as of March 31, 2020 January 1, 2020 ​ (b) Amounts are net of tax of $134 and $148 as of March 31, 2020 January 1, 2020 ​ (c) See table below for details about these reclassifications. ​ Three Months Ended March 31, 2021 2020 Amounts reclassified Amounts reclassified Affected line item in from accumulated from accumulated the statement Details about Accumulated Other other other where net income Comprehensive Loss Components(a): comprehensive loss comprehensive loss is presented Amortization of pension and other postretirement benefits: Prior service credit $ (3 ) $ (3 ) (b) Settlement loss 3 41 (c) Actuarial loss 24 20 (b)(d) 24 58 Total before tax (5 ) (14 ) Income tax expense Total reclassifications for the period $ 19 $ 44 Net of tax (a) Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations. ​ (b) These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 12. ​ (c) In connection with the sale of our Chemical Intermediates Businesses, we recognized $41 of pension and other post-employment benefit settlement losses during the three March 31, 2020. ​ (d) Amounts contain approximately $2 and $1 of actuarial losses related to discontinued operations for the three March 31, 2021 2020 Huntsman International ​ Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2021 $ (333 ) $ (1,028 ) $ 8 $ — $ (1,353 ) $ 20 $ (1,333 ) Other comprehensive loss before reclassifications, gross (31 ) — — — (31 ) — (31 ) Tax expense — — — — — — — Amounts reclassified from accumulated other comprehensive loss, gross(c) — 25 — — 25 — 25 Tax expense — (6 ) — — (6 ) — (6 ) Net current-period other comprehensive (loss) income (31 ) 19 — — (12 ) — (12 ) Ending balance, March 31, 2021 $ (364 ) $ (1,009 ) $ 8 $ — $ (1,365 ) $ 20 $ (1,345 ) (a) Amounts are net of tax of $43 for both March 31, 2021 January 1, 2021 ​ (b) Amounts are net of tax of $172 and $178 as of March 31, 2021 January 1, 2021 ​ (c) See table below for details about these reclassifications. ​ Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2020 $ (374 ) $ (1,012 ) $ 8 $ — $ (1,378 ) $ 26 $ (1,352 ) Other comprehensive (loss) income before reclassifications, gross (67 ) 8 — — (59 ) — (59 ) Tax expense (6 ) — — — (6 ) — (6 ) Amounts reclassified from accumulated other comprehensive loss, gross(c) — 59 — — 59 — 59 Tax expense — (14 ) — — (14 ) — (14 ) Net current-period other comprehensive (loss) income (73 ) 53 — — (20 ) — (20 ) Ending balance, March 31, 2020 $ (447 ) $ (959 ) $ 8 $ — $ (1,398 ) $ 26 $ (1,372 ) (a) Amounts are net of tax of $61 and $55 as of March 31, 2020 January 1, 2020 ​ (b) Amounts are net of tax of $160 and $174 as of March 31, 2020 January 1, 2020 ​ (c) See table below for details about these reclassifications. Three Months Ended March 31, 2021 2020 Amounts reclassified Amounts reclassified Affected line item in from accumulated from accumulated the statement Details about Accumulated Other other other where net income Comprehensive Loss Components(a): comprehensive loss comprehensive loss is presented Amortization of pension and other postretirement benefits: Prior service credit $ (3 ) $ (3 ) (b) Settlement loss 3 41 (c) Actuarial loss 25 21 (b)(d) 25 59 Total before tax (6 ) (14 ) Income tax expense Total reclassifications for the period $ 19 $ 45 Net of tax ​ (a) Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations. ​ (b) These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 12. ​ (c) In connection with the sale of our Chemical Intermediates Businesses, we recognized $41 of pension and other post-employment benefit settlement losses during the three March 31, 2020. ​ (d) Amounts contain approximately $2 and $1 of actuarial losses related to discontinued operations for the three March 31, 2021 2020.

Note 15 - Commitments and Conti

Note 15 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	15. ​ L egal atters ​ We are a party to various proceedings instituted by private plaintiffs, governmental authorities and others arising under provisions of applicable laws, including various environmental, products liability and other laws. Except as otherwise disclosed in this report, we do not ​

Note 16 - Environmental, Health

Note 16 - Environmental, Health and Safety Matters	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Environmental Loss Contingency Disclosure [Text Block]	16. ​ EHS C apital xpenditures We may three March 31, 2021 2020 may E nvironmental eserves ​ We have accrued liabilities relating to anticipated environmental cleanup obligations, site reclamation and closure costs and known penalties. Liabilities are recorded when potential liabilities are either known or considered probable and can be reasonably estimated. Our liability estimates are calculated using present value techniques as appropriate and are based upon requirements placed upon us by regulators, available facts, existing technology and past experience. The environmental liabilities do not March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 may may not E nvironmental atters ​ Under the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) and similar state laws, a current or former owner or operator of real property in the U.S. may may nine third not not third ​ Under the Resource Conservation and Recovery Act (“RCRA”) in the U.S. and similar state laws, we may may ​ North Maybe Canyon Mine Remediation ​ The North Maybe Canyon Mine site is a CERCLA site and involves a former phosphorous mine near Soda Springs, Idaho, which is believed to have been operated by several companies, including a predecessor company to us. In 2004, February 2010,

Note 17 - Stock-based Compensat

Note 17 - Stock-based Compensation Plans	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	17. ​ As of March 31, 2021 three The compensation cost from continuing operations under the stock-based compensation plans for our Company and Huntsman International were as follows (dollars in millions): ​ Three months ended March 31, 2021 2020 Huntsman Corporation compensation cost $ 9 $ 7 Huntsman International compensation cost 8 6 ​ The total income tax benefit recognized in the condensed consolidated statements of operations for us and Huntsman International for stock-based compensation arrangements was $1 million for both of the three March 31, 2021 2020 ​ S tock ptions ​ The fair value of each stock option award is estimated on the date of grant using the Black-Scholes valuation model that uses the assumptions noted in the following table. Expected volatilities are based on the historical volatility of our common stock through the grant date. The expected term of options granted was estimated based on the contractual term of the instruments and employees’ expected exercise and post-vesting employment termination behavior. The risk-free rate for periods within the contractual life of the option was based on the U.S. Treasury yield curve in effect at the time of grant. The assumptions noted below represent the weighted average of the assumptions utilized for stock options granted during the periods. ​ Three months ended March 31, 2021 2020 Dividend yield 2.3 % 3.0 % Expected volatility 53.3 % 53.1 % Risk-free interest rate 0.7 % 1.5 % Expected life of stock options granted during the period (in years) 5.9 5.9 ​ A summary of stock option activity under the stock-based compensation plans as of March 31, 2021 three ​ Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Option Awards Shares Price Term Value (in thousands) (years) (in millions) Outstanding at January 1, 2021 4,815 $ 20.37 Granted 304 28.58 Exercised (275 ) 17.94 Forfeited (21 ) 28.12 Outstanding at March 31, 2021 4,823 20.99 6.2 $ 39 Exercisable at March 31, 2021 3,729 20.17 5.4 34 ​ The weighted-average grant-date fair value of stock options granted during the three March 31, 2021 March 31, 2021 ​ The total intrinsic value of stock options exercised during the three March 31, 2021 2020 three March 31, 2021 2020 nil, three March 31, 2021 2020 nil, N onvested hares ​ Nonvested shares granted under the stock-based compensation plans consist of restricted stock and performance share unit awards, which are accounted for as equity awards, and phantom stock, which is accounted for as a liability award because it can be settled in either stock or cash. ​ The fair value of each performance share unit award is estimated using a Monte Carlo simulation model that uses various assumptions, including an expected volatility rate and a risk-free interest rate. For the three March 31, 2021 2020 three March 31, 2021 2020 three three ​ A summary of the status of our nonvested shares as of March 31, 2021 three ​ Equity Awards Liability Awards Weighted Weighted Average Average Grant-Date Grant-Date Shares Fair Value Shares Fair Value (in thousands) (in thousands) Nonvested at January 1, 2021 1,867 $ 23.18 411 $ 23.08 Granted 831 31.17 184 28.58 Vested (512 ) (1)(2) 28.26 (188 ) 24.59 Forfeited (6 ) 21.89 (4 ) 22.88 Nonvested at March 31, 2021 2,180 25.04 403 24.89 ( 1 As of March 31, 2021 not three March 31, 2021 not not ​ ( 2 A total of 110,542 performance share unit awards are reflected in the vested shares in this table, which represents the target number of performance share unit awards for this grant and were included in the balance at December 31, 2020 three March 31, 2021 not As of March 31, 2021 three March 31, 2021 2020

Note 18 - Income Taxes

Note 18 - Income Taxes	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	18. ​ We use the asset and liability method of accounting for income taxes. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial and tax reporting purposes. We evaluate deferred tax assets to determine whether it is more likely than not During the three March 31, 2021 2020 no December 31, 2019, no 2020 2021 Huntsman Corporation ​ We recorded income tax expense from continuing operations of $34 million and $7 million for the three March 31, 2021 2020 Huntsman International ​ Huntsman International recorded income tax expense from continuing operations of $35 million and $7 million for the three March 31, 2021 2020

Note 19 - Earnings Per Share

Note 19 - Earnings Per Share	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	19. ​ Basic earnings per share excludes dilution and is computed by dividing net income attributable to Huntsman Corporation common stockholders by the weighted average number of shares outstanding during the period. Diluted earnings per share reflects all potential dilutive common shares outstanding during the period and is computed by dividing net income attributable to Huntsman Corporation common stockholders by the weighted average number of shares outstanding during the period increased by the number of additional shares that would have been outstanding as dilutive securities. ​ Basic and diluted earnings per share is determined using the following information (in millions): ​ Three months ended March 31, 2021 2020 Numerator: Basic and diluted income (loss) from continuing operations: Income (loss) from continuing operations attributable to Huntsman Corporation $ 82 $ (72 ) Basic and diluted net income: Net income attributable to Huntsman Corporation $ 83 $ 705 Denominator: Weighted average shares outstanding 220.4 223.2 Dilutive shares: Stock-based awards 2.2 — Total weighted average shares outstanding, including dilutive shares 222.6 223.2 ​ Additional stock-based awards of 1.1 million and 5.6 million weighted average equivalent shares of stock were outstanding during the three March 31, 2021 2020 not three March 31, 2021 2020 ​

Note 20 - Operating Segment Inf

Note 20 - Operating Segment Information	3 Months Ended
	Mar. 31, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	20. ​ We derive our revenues, earnings and cash flows from the manufacture and sale of a wide variety of differentiated and commodity chemical products. We have four The major products of each reportable operating segment are as follows: ​ Segment Products Polyurethanes ​ MDI, polyols, TPU and other polyurethane-related products Performance Products ​ Specialty amines, ethyleneamines, maleic anhydride and technology licenses Advanced Materials ​ Basic liquid and solid epoxy resins; specialty resin compounds; cross-linking, matting, and curing and toughening agents; epoxy, acrylic and polyurethane-based formulations; specialty nitrile latex, alkyd resins and carbon nano materials Textile Effects ​ Textile chemicals and dyes Sales between segments are generally recognized at external market prices and are eliminated in consolidation. Adjusted EBITDA is presented as a measure of the financial performance of our global business units and for reporting the results of our operating segments. The adjusted EBITDA of our reportable operating segments excludes items that principally apply to our Company as a whole. The revenues and adjusted EBITDA from continuing operations for each of our reportable operating segments are as follows (dollars in millions): ​ Three months ended March 31, 2021 2020 Revenues: Polyurethanes $ 1,068 $ 888 Performance Products 305 292 Advanced Materials 278 241 Textile Effects 193 180 Corporate and eliminations (7 ) (8 ) Total $ 1,837 $ 1,593 Huntsman Corporation: Segment adjusted EBITDA(1): Polyurethanes $ 207 $ 84 Performance Products 63 58 Advanced Materials 44 48 Textile Effects 25 20 Corporate and other(2) (50 ) (45 ) Total 289 165 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (19 ) (18 ) Income tax expense—continuing operations (34 ) (7 ) Income tax expense—discontinued operations — (238 ) Depreciation and amortization—continuing operations (74 ) (67 ) Net income attributable to noncontrolling interests 17 3 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (9 ) (13 ) EBITDA from discontinued operations(3) 1 1,015 Fair value adjustments to Venator investment (19 ) (110 ) Certain legal and other settlements and related expenses (2 ) (2 ) Gain on sale of businesses/assets — 2 Income from transition services arrangements 1 — Certain nonrecurring information technology project implementation costs (1 ) (1 ) Amortization of pension and postretirement actuarial losses (22 ) (18 ) Plant incident remediation costs (4 ) — Restructuring, impairment and plant closing and transition costs (24 ) (3 ) Net income $ 100 $ 708 ​ Three months ended March 31, 2021 2020 Huntsman International: Segment adjusted EBITDA(1): Polyurethanes $ 207 $ 84 Performance Products 63 58 Advanced Materials 44 48 Textile Effects 25 20 Corporate and other(2) (47 ) (44 ) Total 292 166 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (19 ) (20 ) Income tax expense—continuing operations (35 ) (7 ) Income tax expense—discontinued operations — (238 ) Depreciation and amortization—continuing operations (73 ) (67 ) Net income attributable to noncontrolling interests 17 3 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (9 ) (13 ) EBITDA from discontinued operations(3) 1 1,015 Fair value adjustments to Venator investment (19 ) (110 ) Certain legal and other settlements and related expenses (2 ) (2 ) Gain on sale of businesses/assets — 2 Income from transition services arrangements 1 — Certain nonrecurring information technology project implementation costs (1 ) (1 ) Amortization of pension and postretirement actuarial losses (23 ) (18 ) Plant incident remediation costs (4 ) — Restructuring, impairment and plant closing and transition costs (24 ) (3 ) Net income $ 102 $ 707 ( 1 We use segment adjusted EBITDA as the measure of each segment’s profit or loss. We believe that segment adjusted EBITDA more accurately reflects what the chief operating decision maker uses to make decisions about resources to be allocated to the segments and assess their financial performance. Segment adjusted EBITDA is defined as net income of Huntsman Corporation or Huntsman International, as appropriate, before interest, income tax, depreciation and amortization, net income attributable to noncontrolling interests and certain Corporate and other items, as well as eliminating the following adjustments: (a) business acquisition and integration expenses and purchase accounting inventory adjustments; (b) EBITDA from discontinued operations; (c) fair value adjustments to Venator investment; (d) certain legal and other settlements and related expenses; (e) gain on sale of businesses/assets; (f) income from transition services arrangements related to the sale of our Chemical Intermediates Businesses to Indorama; (g) certain nonrecurring information technology project implementation costs; (h) amortization of pension and postretirement actuarial losses; (i) plant incident remediation costs; and (j) restructuring, impairment, plant closing and transition costs. ​ ( 2 Corporate and other includes unallocated corporate overhead, unallocated foreign exchange gains and losses, LIFO inventory valuation reserve adjustments, loss on early extinguishment of debt, unallocated restructuring, impairment and plant closing costs, nonoperating income and expense and gains and losses on the disposition of corporate assets. ​ ​ ​ ​

Significant Accounting Policies

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	P rinciples of onsolidation ​ Our condensed consolidated financial statements include the accounts of our wholly-owned and majority-owned subsidiaries and any variable interest entities for which we are the primary beneficiary. Intercompany accounts and transactions have been eliminated.
Reclassification, Comparability Adjustment [Policy Text Block]	R ecl a ss ifications Certain amounts in the condensed consolidated financial statements for the prior period have been reclassified to conform with the current presentation.
Use of Estimates, Policy [Policy Text Block]	U se of stimates ​ The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Note 3 - Business Combination_2

Note 3 - Business Combinations and Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Fair value of assets acquired and liabilities assumed: Cash paid for the Gabriel Acquisition $ 249 Cash $ 9 Accounts receivable 13 Inventories 26 Property, plant and equipment 23 Intangible assets 16 Goodwill 172 Accounts payable (7 ) Accrued liabilities (2 ) Deferred income taxes (1 ) Total fair value of net assets acquired $ 249 Fair value of assets acquired and liabilities assumed: Cash paid for the CVC Thermoset Specialties Acquisition $ 304 Accounts receivable $ 12 Inventories 37 Property, plant and equipment 67 Intangible assets 117 Goodwill 120 Accounts payable (7 ) Accrued liabilities (1 ) Deferred income taxes (41 ) Total fair value of net assets acquired $ 304 Fair value of assets acquired and liabilities assumed: Cash paid for the Icynene-Lapolla Acquisition in Q1 2020 $ 353 Cash $ 7 Accounts receivable 36 Inventories 32 Prepaid expenses and other current assets 2 Property, plant and equipment 9 Intangible assets 130 Goodwill 167 Other noncurrent assets 4 Accounts payable (14 ) Accrued liabilities (11 ) Deferred income taxes (9 ) Total fair value of net assets acquired $ 353
Business Acquisition, Pro Forma Information [Table Text Block]	Three months ended March 31, 2021(1) 2020 Revenues $ 1,841 $ 1,675 Net income 88 705 Net income attributable to Huntsman Corporation 71 702 ​ Three months ended March 31, 2021(1) 2020 Revenues $ 1,841 $ 1,675 Net income 90 704 Net income attributable to Huntsman International 73 701

Note 4 - Discontinued Operati_2

Note 4 - Discontinued Operations and Business Dispositions (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Equity Method Investments [Table Text Block]	Three months ended March 31, 2020 Revenues $ 532 Gross profit 61 Income from continuing operations 8 Net income 8 Net income attributable to Venator 7
Disposal Groups, Including Discontinued Operations [Table Text Block]	Three months ended March 31, 2020 Major line items constituting pretax income of discontinued operations(1): Trade sales, services and fees, net(2) $ 6 Cost of goods sold(2) 9 Gain on sale of the Chemical Intermediates Businesses 990 Insurance proceeds 28 Income from discontinued operations before income taxes 1,015 Income tax expense (238 ) Net income attributable to discontinued operations $ 777

Note 5 - Inventories (Tables)

Note 5 - Inventories (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Inventory, Current [Table Text Block]	March 31, December 31, 2021 2020 Raw materials and supplies $ 245 $ 180 Work in progress 47 44 Finished goods 745 651 Total 1,037 875 LIFO reserves (31 ) (27 ) Net inventories $ 1,006 $ 848

Note 6 - Variable Interest En_2

Note 6 - Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Variable Interest Entities [Table Text Block]	March 31, December 31, 2021 2020 Current assets $ 56 $ 49 Property, plant and equipment, net 166 167 Operating lease right-of-use assets 27 22 Other noncurrent assets 152 138 Deferred income taxes 30 30 Total assets $ 431 $ 406 Current liabilities $ 201 $ 183 Long-term debt — 3 Noncurrent operating lease liabilities 21 17 Other noncurrent liabilities 82 82 Deferred income taxes 1 1 Total liabilities $ 305 $ 286 Three months ended March 31, 2021 2020 Revenues $ — $ — Income from continuing operations before income taxes — 1 Net cash provided by operating activities 4 6

Note 7 - Restructuring, Impai_2

Note 7 - Restructuring, Impairment and Plant Closing Costs (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	Workforce reductions Demolition and decommissioning Non-cancelable lease and contract termination costs Other restructuring costs Total Accrued liabilities as of January 1, 2021 $ 29 $ — $ 2 $ — $ 31 2021 charges for 2020 and prior initiatives 12 — — 2 14 2021 charges for 2021 initiatives 2 — — — 2 2021 payments for 2020 and prior initiatives (5 ) — — (2 ) (7 ) Accrued liabilities as of March 31, 2021 $ 38 $ — $ 2 $ — $ 40
Schedule of Restructuring Reserve By Type of Cost and Segment [Table Text Block]	Performance Advanced Textile Corporate Polyurethanes Products Materials Effects and Other Total Accrued liabilities as of January 1, 2021 $ 12 $ 2 $ 9 $ 8 $ — $ 31 2021 charges (credits) for 2020 and prior initiatives 1 — (1 ) — 14 14 2021 charges for 2021 initiatives — — 2 — — 2 2021 payments for 2020 and prior initiatives (2 ) (1 ) (2 ) (1 ) (1 ) (7 ) Accrued liabilities as of March 31, 2021 $ 11 $ 1 $ 8 $ 7 $ 13 $ 40 Current portion of restructuring reserves $ 11 $ 1 $ 5 $ 4 $ 5 $ 26 Long-term portion of restructuring reserves — — 3 3 8 14
Schedule of Cash and Noncash Restructuring Charges By Type of Initiative [Table Text Block]	Three months ended March 31, 2021 2020 Cash charges: 2021 charges for 2020 and prior initiatives $ 14 $ — 2021 charges for 2021 initiatives 2 — 2020 charges for 2019 and prior initiatives — 1 2020 charges for 2020 initiatives — 2 Noncash charges: Other noncash charges 8 — Total restructuring, impairment and plant closing costs $ 24 $ 3

Note 8 - Debt (Tables)

Note 8 - Debt (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Debt [Table Text Block]	March 31, December 31, 2021 2020 Senior Credit Facilities: Revolving facility $ — $ — Amounts outstanding under A/R programs — — Senior notes 1,489 2,047 Variable interest entities 55 50 Other 23 24 Total debt $ 1,567 $ 2,121 Total current portion of debt $ 57 $ 593 Long-term portion of debt 1,510 1,528 Total debt $ 1,567 $ 2,121
Schedule of Line of Credit Facilities [Table Text Block]	Unamortized Discounts and Committed Principal Debt Issuance Carrying Facility Amount Outstanding Costs Value Interest Rate(2) Maturity Revolving Credit Facility $ 1,200 $ — (1) $ — (1) $ — (1) USD LIBOR plus 1.50% 2023
Schedule of Accounts Receivable Programs [Table Text Block]	Maximum Funding Amount Facility Maturity Availability (1) Outstanding Interest Rate (2) U.S. A/R Program April 2022 $ 150 $ — (3) Applicable rate plus 0.90% EU A/R Program April 2022 € 100 € — Applicable rate plus 1.30% (or approximately $118)

Note 10 - Fair Value (Tables)

Note 10 - Fair Value (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Fair Value, by Balance Sheet Grouping [Table Text Block]	March 31, 2021 December 31, 2020 Carrying Estimated Carrying Estimated Value Fair Value Value Fair Value Non-qualified employee benefit plan investments $ 21 $ 21 $ 26 $ 26 Investment in Venator 45 45 32 32 Option agreement for remaining Venator shares (25 ) (25 ) 11 11 Long-term debt (including current portion) (1,567 ) (1,729 ) (2,121 ) (2,334 )

Note 11 - Revenue Recognition (

Note 11 - Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Disaggregation of Revenue [Table Text Block]	Performance Advanced Textile Corporate and 2021 Polyurethanes Products Materials Effects Eliminations Total Primary Geographic Markets(1) U.S. and Canada $ 371 $ 120 $ 83 $ 13 $ (3 ) $ 584 Europe 279 77 99 31 (3 ) 483 Asia Pacific 336 91 71 119 — 617 Rest of world 82 17 25 30 (1 ) 153 $ 1,068 $ 305 $ 278 $ 193 $ (7 ) $ 1,837 Major Product Groupings MDI urethanes $ 1,068 $ 1,068 Differentiated $ 305 305 Specialty $ 245 245 Non-specialty 33 33 Textile chemicals and dyes $ 193 193 Eliminations $ (7 ) (7 ) $ 1,068 $ 305 $ 278 $ 193 $ (7 ) $ 1,837 Performance Advanced Textile Corporate and 2020 Polyurethanes Products Materials Effects Eliminations Total Primary Geographic Markets(1) U.S. and Canada $ 370 $ 129 $ 63 $ 17 $ (7 ) $ 572 Europe 245 74 101 32 (1 ) 451 Asia Pacific 199 70 56 103 — 428 Rest of world 74 19 21 28 — 142 $ 888 $ 292 $ 241 $ 180 $ (8 ) $ 1,593 Major Product Groupings MDI urethanes $ 888 $ 888 Differentiated $ 292 292 Specialty $ 211 211 Non-specialty 30 30 Textile chemicals and dyes $ 180 180 Eliminations $ (8 ) (8 ) $ 888 $ 292 $ 241 $ 180 $ (8 ) $ 1,593

Note 12 - Employee Benefit Pl_2

Note 12 - Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Net Benefit Costs [Table Text Block]	Other Postretirement Defined Benefit Plans Benefit Plans Three months Three months ended ended March 31, March 31, 2021 2020 2021 2020 Service cost $ 14 $ 14 $ — $ — Interest cost 12 15 — 1 Expected return on assets (42 ) (43 ) — — Amortization of prior service benefit (2 ) (2 ) (1 ) (1 ) Amortization of actuarial loss 23 20 1 — Settlement loss 3 — — — Net periodic benefit cost $ 8 $ 4 $ — $ — Other Postretirement Defined Benefit Plans Benefit Plans Three months Three months ended ended March 31, March 31, 2021 2020 2021 2020 Service cost $ 14 $ 14 $ — $ — Interest cost 12 15 — 1 Expected return on assets (42 ) (43 ) — — Amortization of prior service benefit (2 ) (2 ) (1 ) (1 ) Amortization of actuarial loss 24 21 1 — Settlement loss 3 — — — Net periodic benefit cost $ 9 $ 5 $ — $ —

Note 14 - Accumulated Other C_2

Note 14 - Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2021 $ (328 ) $ (1,050 ) $ 8 $ 4 $ (1,366 ) $ 20 $ (1,346 ) Other comprehensive loss before reclassifications, gross (32 ) — — — (32 ) — (32 ) Tax expense — — — — — — — Amounts reclassified from accumulated other comprehensive loss, gross(c) — 24 — — 24 — 24 Tax expense — (5 ) — — (5 ) — (5 ) Net current-period other comprehensive (loss) income (32 ) 19 — — (13 ) — (13 ) Ending balance, March 31, 2021 $ (360 ) $ (1,031 ) $ 8 $ 4 $ (1,379 ) $ 20 $ (1,359 ) Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests Corporation Beginning balance, January 1, 2020 $ (369 ) $ (1,031 ) $ 8 $ 4 $ (1,388 ) $ 26 $ (1,362 ) Other comprehensive (loss) income before reclassifications, gross (67 ) 8 — — (59 ) — (59 ) Tax expense (6 ) — — — (6 ) — (6 ) Amounts reclassified from accumulated other comprehensive loss, gross(c) — 58 — — 58 — 58 Tax expense — (14 ) — — (14 ) — (14 ) Net current-period other comprehensive (loss) income (73 ) 52 — — (21 ) — (21 ) Ending balance, March 31, 2020 $ (442 ) $ (979 ) $ 8 $ 4 $ (1,409 ) $ 26 $ (1,383 ) Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2021 $ (333 ) $ (1,028 ) $ 8 $ — $ (1,353 ) $ 20 $ (1,333 ) Other comprehensive loss before reclassifications, gross (31 ) — — — (31 ) — (31 ) Tax expense — — — — — — — Amounts reclassified from accumulated other comprehensive loss, gross(c) — 25 — — 25 — 25 Tax expense — (6 ) — — (6 ) — (6 ) Net current-period other comprehensive (loss) income (31 ) 19 — — (12 ) — (12 ) Ending balance, March 31, 2021 $ (364 ) $ (1,009 ) $ 8 $ — $ (1,365 ) $ 20 $ (1,345 ) Pension Other Foreign and other comprehensive Amounts Amounts currency postretirement income of attributable to attributable to translation benefits unconsolidated noncontrolling Huntsman adjustment(a) adjustments(b) affiliates Other, net Total interests International Beginning balance, January 1, 2020 $ (374 ) $ (1,012 ) $ 8 $ — $ (1,378 ) $ 26 $ (1,352 ) Other comprehensive (loss) income before reclassifications, gross (67 ) 8 — — (59 ) — (59 ) Tax expense (6 ) — — — (6 ) — (6 ) Amounts reclassified from accumulated other comprehensive loss, gross(c) — 59 — — 59 — 59 Tax expense — (14 ) — — (14 ) — (14 ) Net current-period other comprehensive (loss) income (73 ) 53 — — (20 ) — (20 ) Ending balance, March 31, 2020 $ (447 ) $ (959 ) $ 8 $ — $ (1,398 ) $ 26 $ (1,372 )
Huntsman International LLC [Member]
Notes Tables
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Three Months Ended March 31, 2021 2020 Amounts reclassified Amounts reclassified Affected line item in from accumulated from accumulated the statement Details about Accumulated Other other other where net income Comprehensive Loss Components(a): comprehensive loss comprehensive loss is presented Amortization of pension and other postretirement benefits: Prior service credit $ (3 ) $ (3 ) (b) Settlement loss 3 41 (c) Actuarial loss 24 20 (b)(d) 24 58 Total before tax (5 ) (14 ) Income tax expense Total reclassifications for the period $ 19 $ 44 Net of tax Three Months Ended March 31, 2021 2020 Amounts reclassified Amounts reclassified Affected line item in from accumulated from accumulated the statement Details about Accumulated Other other other where net income Comprehensive Loss Components(a): comprehensive loss comprehensive loss is presented Amortization of pension and other postretirement benefits: Prior service credit $ (3 ) $ (3 ) (b) Settlement loss 3 41 (c) Actuarial loss 25 21 (b)(d) 25 59 Total before tax (6 ) (14 ) Income tax expense Total reclassifications for the period $ 19 $ 45 Net of tax

Note 17 - Stock-based Compens_2

Note 17 - Stock-based Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Share-based Payment Arrangement, Cost by Plan [Table Text Block]	Three months ended March 31, 2021 2020 Huntsman Corporation compensation cost $ 9 $ 7 Huntsman International compensation cost 8 6
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Three months ended March 31, 2021 2020 Dividend yield 2.3 % 3.0 % Expected volatility 53.3 % 53.1 % Risk-free interest rate 0.7 % 1.5 % Expected life of stock options granted during the period (in years) 5.9 5.9
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Weighted Weighted Average Average Remaining Aggregate Exercise Contractual Intrinsic Option Awards Shares Price Term Value (in thousands) (years) (in millions) Outstanding at January 1, 2021 4,815 $ 20.37 Granted 304 28.58 Exercised (275 ) 17.94 Forfeited (21 ) 28.12 Outstanding at March 31, 2021 4,823 20.99 6.2 $ 39 Exercisable at March 31, 2021 3,729 20.17 5.4 34
Schedule of Nonvested Share Activity [Table Text Block]	Equity Awards Liability Awards Weighted Weighted Average Average Grant-Date Grant-Date Shares Fair Value Shares Fair Value (in thousands) (in thousands) Nonvested at January 1, 2021 1,867 $ 23.18 411 $ 23.08 Granted 831 31.17 184 28.58 Vested (512 ) (1)(2) 28.26 (188 ) 24.59 Forfeited (6 ) 21.89 (4 ) 22.88 Nonvested at March 31, 2021 2,180 25.04 403 24.89

Note 19 - Earnings Per Share (T

Note 19 - Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three months ended March 31, 2021 2020 Numerator: Basic and diluted income (loss) from continuing operations: Income (loss) from continuing operations attributable to Huntsman Corporation $ 82 $ (72 ) Basic and diluted net income: Net income attributable to Huntsman Corporation $ 83 $ 705 Denominator: Weighted average shares outstanding 220.4 223.2 Dilutive shares: Stock-based awards 2.2 — Total weighted average shares outstanding, including dilutive shares 222.6 223.2

Note 20 - Operating Segment I_2

Note 20 - Operating Segment Information (Tables)	3 Months Ended
	Mar. 31, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three months ended March 31, 2021 2020 Revenues: Polyurethanes $ 1,068 $ 888 Performance Products 305 292 Advanced Materials 278 241 Textile Effects 193 180 Corporate and eliminations (7 ) (8 ) Total $ 1,837 $ 1,593 Huntsman Corporation: Segment adjusted EBITDA(1): Polyurethanes $ 207 $ 84 Performance Products 63 58 Advanced Materials 44 48 Textile Effects 25 20 Corporate and other(2) (50 ) (45 ) Total 289 165 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (19 ) (18 ) Income tax expense—continuing operations (34 ) (7 ) Income tax expense—discontinued operations — (238 ) Depreciation and amortization—continuing operations (74 ) (67 ) Net income attributable to noncontrolling interests 17 3 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (9 ) (13 ) EBITDA from discontinued operations(3) 1 1,015 Fair value adjustments to Venator investment (19 ) (110 ) Certain legal and other settlements and related expenses (2 ) (2 ) Gain on sale of businesses/assets — 2 Income from transition services arrangements 1 — Certain nonrecurring information technology project implementation costs (1 ) (1 ) Amortization of pension and postretirement actuarial losses (22 ) (18 ) Plant incident remediation costs (4 ) — Restructuring, impairment and plant closing and transition costs (24 ) (3 ) Net income $ 100 $ 708 Three months ended March 31, 2021 2020 Huntsman International: Segment adjusted EBITDA(1): Polyurethanes $ 207 $ 84 Performance Products 63 58 Advanced Materials 44 48 Textile Effects 25 20 Corporate and other(2) (47 ) (44 ) Total 292 166 Reconciliation of adjusted EBITDA to net income: Interest expense, net—continuing operations (19 ) (20 ) Income tax expense—continuing operations (35 ) (7 ) Income tax expense—discontinued operations — (238 ) Depreciation and amortization—continuing operations (73 ) (67 ) Net income attributable to noncontrolling interests 17 3 Other adjustments: Business acquisition and integration expenses and purchase accounting inventory adjustments (9 ) (13 ) EBITDA from discontinued operations(3) 1 1,015 Fair value adjustments to Venator investment (19 ) (110 ) Certain legal and other settlements and related expenses (2 ) (2 ) Gain on sale of businesses/assets — 2 Income from transition services arrangements 1 — Certain nonrecurring information technology project implementation costs (1 ) (1 ) Amortization of pension and postretirement actuarial losses (23 ) (18 ) Plant incident remediation costs (4 ) — Restructuring, impairment and plant closing and transition costs (24 ) (3 ) Net income $ 102 $ 707

Note 1 - General (Details Textu

Note 1 - General (Details Textual) $ / shares in Units, € in Millions, $ in Millions	Apr. 28, 2021$ / shares	Jan. 15, 2021USD ($)	Jan. 15, 2021EUR (€)	Mar. 31, 2021USD ($)$ / shares	Mar. 31, 2020$ / shares
Number of Operating Segments				4
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ / shares				$ 0.1625	$ 0.1625
Senior Notes Maturing April 2021 [Member]
Debt Instrument, Amount Redeemed		$ 541	€ 445
Debt Instrument, Interest Rate, Stated Percentage		5.125%	5.125%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed		100.00%	100.00%
Incremental Cash Tax Liability Incurred During Period in Connection with Debt Redemption | $				$ 15
Gabriel Acquisition [Member]
Payments to Acquire Businesses, Gross | $		$ 249
Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ / shares	$ 0.1875
Common Stock Dividend, Increase, Percent	15.00%

Note 3 - Business Combination_3

Note 3 - Business Combinations and Acquisitions (Details Textual) - USD ($) $ in Thousands	Jan. 15, 2021	May 18, 2020	Feb. 20, 2020	Mar. 31, 2021	Mar. 31, 2021
Gabriel Acquisition [Member]
Payments to Acquire Businesses, Gross	$ 249,000
Business Combination, Acquisition Related Costs				$ 1,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual					$ 23,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual					$ 4,000
CVC Thermoset Specialties [Member]
Payments to Acquire Businesses, Gross		$ 304,000
Finite-Lived Intangible Asset, Useful Life (Year)		20 years
Business Acquisition, Goodwill, Expected Tax Deductible Amount		$ 0
Icynene-Lapolla [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			10 years
Business Acquisition, Goodwill, Expected Tax Deductible Amount			$ 0
Business Combination, Consideration Transferred, Total			$ 353,000

Note 3 - Business Combination_4

Note 3 - Business Combinations and Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Jan. 15, 2021	May 18, 2020	Feb. 20, 2020	Mar. 31, 2021	Dec. 31, 2020
Goodwill				$ 739	$ 533
Gabriel Acquisition [Member]
Payments to Acquire Businesses, Gross	$ 249
Cash	9
Accounts receivable	13
Inventories	26
Property, plant and equipment	23
Intangible assets	16
Goodwill	172
Accounts payable	(7)
Accrued liabilities	(2)
Deferred income taxes	(1)
Total fair value of net assets acquired	249
Cash	$ 9
CVC Thermoset Specialties [Member]
Payments to Acquire Businesses, Gross		$ 304
Accounts receivable		12
Inventories		37
Property, plant and equipment		67
Intangible assets		117
Goodwill		120
Accounts payable		(7)
Accrued liabilities		(1)
Deferred income taxes		(41)
Total fair value of net assets acquired		$ 304
Icynene-Lapolla [Member]
Cash			$ 7
Accounts receivable			36
Inventories			32
Property, plant and equipment			9
Intangible assets			130
Goodwill			167
Accounts payable			(14)
Accrued liabilities			(11)
Deferred income taxes			(9)
Total fair value of net assets acquired			353
Business Combination, Consideration Transferred, Total			353
Cash			7
Prepaid expenses and other current assets			2
Other noncurrent assets			$ 4

Note 3 - Business Combination_5

Note 3 - Business Combinations and Acquisitions - Pro Forma Revenues and Net Income (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Gabriel Acquisition [Member]
Revenues	[1]	$ 1,841
Net income	[1]	88
Net (loss) income	[1]	71
Gabriel Acquisition [Member] | Huntsman International LLC [Member]
Revenues	[1]	1,841
Net income	[1]	90
Net (loss) income	[1]	$ 73
Gabriel, CVC Thermoset and Icynene-Lapolla Acquisitions [Member]
Revenues			$ 1,675
Net income			705
Net (loss) income			702
Gabriel, CVC Thermoset and Icynene-Lapolla Acquisitions [Member] | Huntsman International LLC [Member]
Revenues			1,675
Net income			704
Net (loss) income			$ 701
[1]	Includes pro forma information for the Gabriel Acquisition only.

Note 4 - Discontinued Operati_3

Note 4 - Discontinued Operations and Business Dispositions (Details Textual) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Dec. 23, 2020	Jan. 03, 2020	Mar. 31, 2021	Mar. 31, 2020
Equity Securities, FV-NI, Unrealized Gain (Loss), Total			$ (19)
Equity Investment, Unrealized Gain (Loss)				$ (110)
Proceeds from Divestiture of Businesses			15	1,915
Chemical Intermediates Businesses [Member] | Discontinued Operations, Disposed of by Sale [Member]
Disposal Group, Including Discontinued Operation, Consideration		$ 2,000
Proceeds from Divestiture of Businesses		1,920
Disposal Group, Including Discontinued Operation, Pension and Other Post Employment Plan Benefit Obligation		$ 72
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Total				758
Venator Materials PLC [Member]
Equity Securities, FV-NI, Unrealized Gain (Loss), Total			$ (19)
Equity Investment, Unrealized Gain (Loss)				$ (110)
Venator Materials PLC [Member] | SK Capital Partners, LP [Member]
Equity Method Investment Using Fair Value Option, Number of Shares Sold (in shares)	42.4
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment	$ 99
Equity Securities Held for Which There Exists an Option for Another Party to Purchase (in shares)	9.7
Equity Securities Held for Which There Exists an Option for Another Party to Purchase, Price Per Share (in dollars per share)	$ 2.15

Note 4 - Discontinued Operati_4

Note 4 - Discontinued Operations and Business Dispositions - Summarized Financial Information of Venator (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Gross profit	$ 392	$ 297
Income from continuing operations	99	(69)
Net income	$ 83	705
Venator Materials PLC [Member]
Net income		7
Venator Materials PLC [Member]
Revenues		532
Gross profit		61
Income from continuing operations		8
Net income		$ 8

Note 4 - Discontinued Operati_5

Note 4 - Discontinued Operations and Business Dispositions - Summary of Major Classes of Line Items of Discontinued Operations (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Income tax expense		$ 0	$ (238)
Net income attributable to discontinued operations		$ 1	777
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Chemical Intermediates Business, Australia Styrenics, North Ameircan Polymers, and Base Chemicals [Member]
Trade sales, services and fees, net	[1],[2]		6
Cost of goods sold	[1],[2]		9
Gain on sale of the Chemical Intermediates Businesses	[1]		990
Insurance proceeds	[1]		28
Income from discontinued operations before income taxes			1,015
Income tax expense			(238)
Net income attributable to discontinued operations			$ 777
[1]	Discontinued operations include our Chemical Intermediates Businesses, our Australian styrenics operations and our North American polymers and base chemicals operations for all periods presented.
[2]	Includes eliminations of trade sales, services and fees, net and cost of sales between continuing operations and discontinued operations.

Note 5 - Inventories (Details T

Note 5 - Inventories (Details Textual)	Mar. 31, 2021	Dec. 31, 2020
Percentage of LIFO Inventory	6.00%	7.00%

Note 5 - Inventories - Inventor

Note 5 - Inventories - Inventories (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Raw materials and supplies		$ 245	$ 180
Work in progress		47	44
Finished goods		745	651
Total		1,037	875
LIFO reserves		(31)	(27)
Net inventories	[1]	$ 1,006	$ 848
[1]	At March 31, 2021 and December 31, 2020, respectively, $8 and $2 of cash and cash equivalents, $10 and $6 of accounts and notes receivable (net), $36 and $38 of inventories, $166 and $167 of property, plant and equipment (net), $22 and $23 of other noncurrent assets, $128 and $119 of accounts payable, $13 each of accrued liabilities, $55 and $47 of current portion of debt, $5 each of current operating lease liabilities, nil and $3 of long-term debt, $21 and $17 of noncurrent operating lease liabilities and $82 each of other noncurrent liabilities from consolidated variable interest entities are included in the respective balance sheet captions above. See "Note 6. Variable Interest Entities."

Note 6 - Variable Interest En_3

Note 6 - Variable Interest Entities (Details Textual)	3 Months Ended
	Mar. 31, 2021
Rubicon LLC [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	50.00%
Arabian Amines Company [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	50.00%

Note 6 - Variable Interest En_4

Note 6 - Variable Interest Entities - Schedule of Financial Information of Variable Interest Entities (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Current assets		$ 2,929,000		$ 3,568,000
Property, plant and equipment, net	[1]	2,514,000		2,505,000
Operating lease right-of-use assets		432,000		445,000
Deferred income taxes		282,000		288,000
Total assets		8,300,000		8,713,000
Current liabilities		1,564,000		1,979,000
Long-term debt	[1]	1,510,000		1,528,000
Noncurrent operating lease liabilities	[1]	401,000		411,000
Other noncurrent liabilities	[1]	875,000		910,000
Deferred income taxes		216,000		212,000
Total liabilities		4,566,000		5,040,000
Revenues	[2]	1,837,000	$ 1,593,000
Income from continuing operations before income taxes		133,000	(62,000)
Net cash provided by operating activities		(17,000)	(75,000)
Variable Interest Entity, Primary Beneficiary [Member]
Current assets		56,000		49,000
Property, plant and equipment, net		166,000		167,000
Operating lease right-of-use assets		27,000		22,000
Other noncurrent assets		152,000		138,000
Deferred income taxes		30,000		30,000
Total assets		431,000		406,000
Current liabilities		201,000		183,000
Long-term debt		0		3,000
Noncurrent operating lease liabilities		21,000		17,000
Other noncurrent liabilities		82,000		82,000
Deferred income taxes		1,000		1,000
Total liabilities		305,000		$ 286,000
Revenues		0	0
Income from continuing operations before income taxes		0	1,000
Net cash provided by operating activities		$ 4,000	$ 6,000
[1]	At March 31, 2021 and December 31, 2020, respectively, $8 and $2 of cash and cash equivalents, $10 and $6 of accounts and notes receivable (net), $36 and $38 of inventories, $166 and $167 of property, plant and equipment (net), $22 and $23 of other noncurrent assets, $128 and $119 of accounts payable, $13 each of accrued liabilities, $55 and $47 of current portion of debt, $5 each of current operating lease liabilities, nil and $3 of long-term debt, $21 and $17 of noncurrent operating lease liabilities and $82 each of other noncurrent liabilities from consolidated variable interest entities are included in the respective balance sheet captions above. See "Note 6. Variable Interest Entities."
[2]	Geographic information for revenues is based upon countries into which product is sold.

Note 7 - Restructuring, Impai_3

Note 7 - Restructuring, Impairment and Plant Closing Costs (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Employee Severance [Member] | Corporate Segment [Member]
Restructuring Charges, Total	$ 14
Restructuring and Related Cost, Expected Cost, Total	2
Employee Severance [Member] | Textile Effects [Member]
Restructuring Charges, Total		$ 2
Program to Optimize Downstream Footprint [Member] | Polyurethanes [Member]
Restructuring Charges, Total	1
Program to Optimize Downstream Footprint [Member] | Polyurethanes [Member] | Minimum [Member]
Restructuring and Related Cost, Expected Cost, Total	10
Program to Optimize Downstream Footprint [Member] | Polyurethanes [Member] | Maximum [Member]
Restructuring and Related Cost, Expected Cost, Total	$ 12

Note 7 - Restructuring, Impai_4

Note 7 - Restructuring, Impairment and Plant Closing Costs - Accrued Restructuring Costs By Type of Cost and Initiative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accrued liabilities, beginning balance	$ 31
Accrued liabilities, ending balance	40
Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	14	$ 0
Restructuring payments	(7)
Initiatives 2021 [Member]
Restructuring Charges, Total	2	$ 0
Employee Severance [Member]
Accrued liabilities, beginning balance	29
Accrued liabilities, ending balance	38
Employee Severance [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	12
Restructuring payments	(5)
Employee Severance [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	2
Demolition and Decommissioning [Member]
Accrued liabilities, beginning balance	0
Accrued liabilities, ending balance	0
Demolition and Decommissioning [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	0
Demolition and Decommissioning [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	0
Non-cancelable Lease Cost and Contract Termination Costs [Member]
Accrued liabilities, beginning balance	2
Accrued liabilities, ending balance	2
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	0
Non-cancelable Lease Cost and Contract Termination Costs [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	0
Other Restructuring [Member]
Accrued liabilities, beginning balance	0
Accrued liabilities, ending balance	0
Other Restructuring [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	2
Restructuring payments	(2)
Other Restructuring [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	$ 0

Note 7 - Restructuring, Impai_5

Note 7 - Restructuring, Impairment and Plant Closing Costs - Reserves for Restructuring, Impairment and Plant Closing Costs By Segment and Initiative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accrued liabilities, beginning balance	$ 31
Accrued liabilities, ending balance	40
Current portion of restructuring reserves	26
Long-term portion of restructuring reserves	14
Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	14	$ 0
Restructuring payments	(7)
Initiatives 2021 [Member]
Restructuring Charges, Total	2	$ 0
Corporate and Reconciling Items [Member]
Accrued liabilities, beginning balance	0
Accrued liabilities, ending balance	13
Current portion of restructuring reserves	5
Long-term portion of restructuring reserves	8
Corporate and Reconciling Items [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	14
Restructuring payments	(1)
Corporate and Reconciling Items [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	0
Polyurethanes [Member] | Operating Segments [Member]
Accrued liabilities, beginning balance	12
Accrued liabilities, ending balance	11
Current portion of restructuring reserves	11
Long-term portion of restructuring reserves	0
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	1
Restructuring payments	(2)
Polyurethanes [Member] | Operating Segments [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	0
Performance Products [Member] | Operating Segments [Member]
Accrued liabilities, beginning balance	2
Accrued liabilities, ending balance	1
Current portion of restructuring reserves	1
Long-term portion of restructuring reserves	0
Performance Products [Member] | Operating Segments [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	(1)
Performance Products [Member] | Operating Segments [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	0
Advanced Materials [Member] | Operating Segments [Member]
Accrued liabilities, beginning balance	9
Accrued liabilities, ending balance	8
Current portion of restructuring reserves	5
Long-term portion of restructuring reserves	3
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	(1)
Restructuring payments	(2)
Advanced Materials [Member] | Operating Segments [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	2
Textile Effects [Member] | Operating Segments [Member]
Accrued liabilities, beginning balance	8
Accrued liabilities, ending balance	7
Current portion of restructuring reserves	4
Long-term portion of restructuring reserves	3
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	0
Restructuring payments	(1)
Textile Effects [Member] | Operating Segments [Member] | Initiatives 2021 [Member]
Restructuring Charges, Total	$ 0

Note 7 - Restructuring, Impai_6

Note 7 - Restructuring, Impairment and Plant Closing Costs - Cash and Noncash Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other noncash charges	$ 8	$ 0
Total restructuring, impairment and plant closing credits	24	3
Initiatives 2020 and Prior [Member]
Restructuring Charges, Total	14	0
Initiatives 2021 [Member]
Restructuring Charges, Total	2	0
Initiatives 2019 and Prior [Member]
Restructuring Charges, Total	0	1
Initiatives 2020 [Member]
Restructuring Charges, Total	$ 0	$ 2

Note 8 - Debt (Details Textual)

Note 8 - Debt (Details Textual) € in Millions, $ in Millions		Jan. 15, 2021USD ($)	Jan. 15, 2021EUR (€)	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Debt Issuance Costs, Net, Total				$ 8	$ 9
Notes Receivable, Related Parties						$ 380
The 2018 Revolving Credit Facility [Member] | Huntsman International LLC [Member]
Line of Credit Facility, Maximum Borrowing Capacity				1,200
Letters of Credit Outstanding, Amount				$ 6
The 2018 Revolving Credit Facility [Member] | Huntsman International LLC [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	[1]			1.50%
US Accounts Receivable Program Maturing April 2022 [Member] | Huntsman International LLC [Member]
Letters of Credit Outstanding, Amount				$ 5
Accounts Receivable Programs [Member] | Huntsman International LLC [Member]
Pledged Financial Instruments, Not Separately Reported, Loans Receivable Pledged as Collateral, Total				245	$ 198
Senior Notes Maturing April 2021 [Member]
Debt Instrument, Amount Redeemed		$ 541	€ 445
Debt Instrument, Redemption Price, Percentage		100.00%	100.00%
Incremental Cash Tax Liability Incurred During Period in Connection with Debt Redemption				$ 15
[1]	Interest rates on borrowings under the Revolving Credit Facility vary based on the type of loan and Huntsman International's debt ratings. The then applicable interest rate as of March 31, 2021 was 1.50% above LIBOR. ?

Note 8 - Debt - Outstanding Deb

Note 8 - Debt - Outstanding Debt (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Total debt, excluding debt to affiliates		$ 1,567	$ 2,121
Total current portion of debt	[1]	57	593
Long-term portion of debt	[1]	1,510	1,528
Total debt		1,567	2,121
The 2018 Revolving Credit Facility [Member]
Total debt, excluding debt to affiliates		0	0
Accounts Receivable Programs [Member]
Total debt, excluding debt to affiliates		0	0
The Senior Notes [Member]
Total debt, excluding debt to affiliates		1,489	2,047
Variable Interest Entities Debt [Member]
Total debt, excluding debt to affiliates		55	50
Other Debt Instruments [Member]
Total debt, excluding debt to affiliates		$ 23	$ 24
[1]	At March 31, 2021 and December 31, 2020, respectively, $8 and $2 of cash and cash equivalents, $10 and $6 of accounts and notes receivable (net), $36 and $38 of inventories, $166 and $167 of property, plant and equipment (net), $22 and $23 of other noncurrent assets, $128 and $119 of accounts payable, $13 each of accrued liabilities, $55 and $47 of current portion of debt, $5 each of current operating lease liabilities, nil and $3 of long-term debt, $21 and $17 of noncurrent operating lease liabilities and $82 each of other noncurrent liabilities from consolidated variable interest entities are included in the respective balance sheet captions above. See "Note 6. Variable Interest Entities."

Note 8 - Debt - Revolving Credi

Note 8 - Debt - Revolving Credit Facility (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Dec. 31, 2020
Amount outstanding		$ 1,567	$ 2,121
The 2018 Revolving Credit Facility [Member] | Huntsman International LLC [Member]
Committed amount		1,200
Principal outstanding	[1]	0
Unamortized discounts and debt issuance costs	[1]	0
Amount outstanding	[1]	$ 0
Maturity		Dec. 31, 2023
The 2018 Revolving Credit Facility [Member] | Huntsman International LLC [Member] | London Interbank Offered Rate (LIBOR) [Member]
Interest rate	[2]	1.50%
[1]	On March 31, 2021, we had an additional $6 million (U.S. dollar equivalents) of letters of credit and bank guarantees issued and outstanding under our Revolving Credit Facility.
[2]	Interest rates on borrowings under the Revolving Credit Facility vary based on the type of loan and Huntsman International's debt ratings. The then applicable interest rate as of March 31, 2021 was 1.50% above LIBOR. ?

Note 8 - Debt - Accounts Receiv

Note 8 - Debt - Accounts Receivable Programs (Details) € in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2021USD ($)	Mar. 31, 2021EUR (€)	Dec. 31, 2020USD ($)
Amount outstanding		$ 1,567		$ 2,121
Approximate maximum funding availability under all A/R programs		118
Approximate amount outstanding under all A/R programs
US A/R Program [Member]
Maturity		Apr. 30, 2022
Maximum funding availability	[1]	$ 150
Amount outstanding	[2]	$ 0
US A/R Program [Member] | London Interbank Offered Rate (LIBOR) [Member]
Interest rate	[3]	0.90%
EU A/R Program [Member]
Maturity		Apr. 30, 2022
Maximum funding availability | €	[1]		€ 100
Amount outstanding | €			€ 0
EU A/R Program [Member] | GBP LIBOR, USD LIBOR or EURIBOR [Member]
Interest rate	[3]	1.30%
[1]	The amount of actual availability under our A/R Programs may be lower based on the level of eligible receivables sold, changes in the credit ratings of our customers, customer concentration levels and certain characteristics of the accounts receivable being transferred, as defined in the applicable agreements.
[2]	As of March 31, 2021, we had approximately $5 million (U.S. dollar equivalents) of letters of credit issued and outstanding under our U.S. A/R Program. As of March 31, 2021 and December 31, 2020, $245 million and $198 million, respectively, of accounts receivable were pledged as collateral under our A/R Programs.
[3]	The applicable rate for our U.S. A/R Program is defined by the lender as USD LIBOR. The applicable rate for our EU A/R Program is either GBP LIBOR, USD LIBOR or EURIBOR.

Note 9 - Derivative Instrumen_2

Note 9 - Derivative Instruments and Hedging Activities (Details Textual) € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2021EUR (€)
Gain (Loss) on Derivative Used in Net Investment Hedge, after Tax	$ 8	$ 8
Foreign Exchange Contract [Member]
Derivative, Notional Amount	162
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount	$ 183		€ 155

Note 10 - Fair Value (Details T

Note 10 - Fair Value (Details Textual) Pure in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021USD ($)	Dec. 31, 2021
Number of Instruments Categorized as Level Three		0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings	$ 0

Note 10 - Fair Value - Fair Val

Note 10 - Fair Value - Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Reported Value Measurement [Member]
Non-qualified employee benefit plan investments	$ 21	$ 26
Investment in Venator	45	32
Option agreement for remaining Venator shares	(25)	11
Long-term debt (including current portion)	(1,567)	(2,121)
Estimate of Fair Value Measurement [Member]
Non-qualified employee benefit plan investments	21	26
Investment in Venator	45	32
Option agreement for remaining Venator shares	(25)	11
Long-term debt (including current portion)	$ (1,729)	$ (2,334)

Note 11 - Revenue Recognition -

Note 11 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Total revenues	[1]	$ 1,837	$ 1,593
MDI Urethanes [Member]
Total revenues		1,068	888
Differentiated [Member]
Total revenues		305	292
Specialty [Member]
Total revenues		245	211
Non-specialty [Member]
Total revenues		33	30
Textile Chemicals and Dyes [Member]
Total revenues		193	180
Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	1,068	888
Operating Segments [Member] | Polyurethanes [Member] | MDI Urethanes [Member]
Total revenues		1,068	888
Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	305	292
Operating Segments [Member] | Performance Products [Member] | Differentiated [Member]
Total revenues		305	292
Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	278	241
Operating Segments [Member] | Advanced Materials [Member] | Specialty [Member]
Total revenues		245	211
Operating Segments [Member] | Advanced Materials [Member] | Non-specialty [Member]
Total revenues		33	30
Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	193	180
Operating Segments [Member] | Textile Effects [Member] | Textile Chemicals and Dyes [Member]
Total revenues		193	180
Segment Reconciling Items [Member]
Total revenues	[1]	(7)	(8)
Intersegment Eliminations [Member]
Total revenues		(7)	(8)
U.S. and Canada [Member]
Total revenues	[1]	584	572
U.S. and Canada [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	371	370
U.S. and Canada [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	120	129
U.S. and Canada [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	83	63
U.S. and Canada [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	13	17
U.S. and Canada [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	(3)	(7)
Europe [Member]
Total revenues	[1]	483	451
Europe [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	279	245
Europe [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	77	74
Europe [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	99	101
Europe [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	31	32
Europe [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	(3)	(1)
Asia Pacific [Member]
Total revenues	[1]	617	428
Asia Pacific [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	336	199
Asia Pacific [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	91	70
Asia Pacific [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	71	56
Asia Pacific [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	119	103
Asia Pacific [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	0	0
Rest of World [Member]
Total revenues	[1]	153	142
Rest of World [Member] | Operating Segments [Member] | Polyurethanes [Member]
Total revenues	[1]	82	74
Rest of World [Member] | Operating Segments [Member] | Performance Products [Member]
Total revenues	[1]	17	19
Rest of World [Member] | Operating Segments [Member] | Advanced Materials [Member]
Total revenues	[1]	25	21
Rest of World [Member] | Operating Segments [Member] | Textile Effects [Member]
Total revenues	[1]	30	28
Rest of World [Member] | Segment Reconciling Items [Member]
Total revenues	[1]	$ (1)	$ 0
[1]	Geographic information for revenues is based upon countries into which product is sold.

Note 12 - Employee Benefit Pl_3

Note 12 - Employee Benefit Plans (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Payment for Pension and Other Postretirement Benefits, Total	$ 14	$ 20
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	$ 42

Note 12 - Employee Benefit Pl_4

Note 12 - Employee Benefit Plans - Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Amortization of actuarial loss	$ 22	$ 18
Huntsman International LLC [Member]
Amortization of actuarial loss	23	18
Defined Benefit Plans [Member]
Service cost	14	14
Interest cost	12	15
Expected return on assets	(42)	(43)
Amortization of prior service benefit	(2)	(2)
Amortization of actuarial loss	23	20
Settlement loss	3	0
Net periodic benefit cost	8	4
Defined Benefit Plans [Member] | Huntsman International LLC [Member]
Service cost	14	14
Interest cost	12	15
Expected return on assets	(42)	(43)
Amortization of prior service benefit	(2)	(2)
Amortization of actuarial loss	24	21
Settlement loss	3	0
Net periodic benefit cost	9	5
Other Postretirement Benefits Plan [Member]
Service cost	0	0
Interest cost	0	1
Expected return on assets	0	0
Amortization of prior service benefit	(1)	(1)
Amortization of actuarial loss	1	0
Settlement loss	0	0
Net periodic benefit cost	0	0
Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]
Service cost	0	0
Interest cost	0	1
Expected return on assets	0	0
Amortization of prior service benefit	(1)	(1)
Amortization of actuarial loss	1	0
Settlement loss	0	0
Net periodic benefit cost	$ 0	$ 0

Note 13 - Huntsman Corporatio_2

Note 13 - Huntsman Corporation Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	May 03, 2018	Feb. 07, 2018
Treasury Stock, Shares, Acquired (in shares)		5,364,519
Treasury Stock, Value, Acquired, Cost Method		$ 96
Dividends, Common Stock, Total	$ 36	$ 37
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)	$ 0.1625	$ 0.1625
Share Repurchase Program 2018 [Member]
Stock Repurchase Program, Authorized Amount			$ 1,000	$ 1,000

Note 14 - Accumulated Other C_3

Note 14 - Accumulated Other Comprehensive Loss (Details Textual) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Total	$ 56	$ 74	$ 56	$ 68
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Total	43	61	43	55
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Total	148	134	153	148
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax, Total	172	160	$ 178	$ 174
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax, Total		41
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Huntsman International LLC [Member]
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax, Total		41
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax, Total	2	1
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] | Huntsman International LLC [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax, Total	$ 2	$ 1

Note 14 - Accumulated Other C_4

Note 14 - Accumulated Other Comprehensive Loss - Components and Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021		Mar. 31, 2020
Beginning balance		$ 3,673		$ 2,824
Ending balance		3,734		3,383
Huntsman International LLC [Member]
Beginning balance		3,725		2,772
Ending balance		3,787		3,428
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Beginning balance		(328)	[1]	(369)	[2]
Other comprehensive loss before reclassifications, gross		(32)	[1]	(67)	[2]
Tax expense		0	[1]	(6)	[2]
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0	[1]	0	[2]
Tax expense		0	[1]	0	[2]
Net current-period other comprehensive (loss) income		(32)	[1]	(73)	[2]
Ending balance		(360)	[1]	(442)	[2]
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Beginning balance		(333)	[4]	(374)	[5]
Other comprehensive loss before reclassifications, gross		(31)	[4]	(67)	[5]
Tax expense		0	[4]	(6)	[5]
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0	[4]	0	[5]
Tax expense		0	[4]	0	[5]
Net current-period other comprehensive (loss) income		(31)	[4]	(73)	[5]
Ending balance		(364)	[4]	(447)	[5]
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Beginning balance		(1,050)	[6]	(1,031)	[7]
Other comprehensive loss before reclassifications, gross		0	[6]	8	[7]
Tax expense		0	[6]	0	[7]
Amounts reclassified from accumulated other comprehensive loss, gross	[3],[8]	24	[6]	58	[7]
Tax expense	[8]	(5)	[6]	(14)	[7]
Net current-period other comprehensive (loss) income		19	[6]	52	[7]
Ending balance		(1,031)	[6]	(979)	[7]
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Beginning balance		(1,028)	[9]	(1,012)	[10]
Other comprehensive loss before reclassifications, gross		0	[9]	8	[10]
Tax expense		0	[9]	0	[10]
Amounts reclassified from accumulated other comprehensive loss, gross	[3],[8]	25	[9]	59	[10]
Tax expense	[8]	(6)	[9]	(14)	[10]
Net current-period other comprehensive (loss) income		19	[9]	53	[10]
Ending balance		(1,009)	[9]	(959)	[10]
Accumulated Other Comprehensive Income (Loss), Unconsolidated Affiliates Including Portion Attributable to Noncontrolling Interest [Member]
Beginning balance		8		8
Other comprehensive loss before reclassifications, gross		0		0
Tax expense		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive (loss) income		0		0
Ending balance		8		8
Accumulated Other Comprehensive Income (Loss), Unconsolidated Affiliates Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Beginning balance		8		8
Other comprehensive loss before reclassifications, gross		0		0
Tax expense		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive (loss) income		0		0
Ending balance		8		8
Accumulated Other Comprehensive Income, Other, Net, Including Portion Attributable to Noncontrolling Interest [Member]
Beginning balance		4		4
Other comprehensive loss before reclassifications, gross		0		0
Tax expense		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive (loss) income		0		0
Ending balance		4		4
Accumulated Other Comprehensive Income, Other, Net, Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Beginning balance		0		0
Other comprehensive loss before reclassifications, gross		0		0
Tax expense		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive (loss) income		0		0
Ending balance		0		0
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Beginning balance		(1,366)		(1,388)
Other comprehensive loss before reclassifications, gross		(32)		(59)
Tax expense		0		(6)
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	24		58
Tax expense		(5)		(14)
Net current-period other comprehensive (loss) income		(13)		(21)
Ending balance		(1,379)		(1,409)
AOCI Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Beginning balance		(1,353)		(1,378)
Other comprehensive loss before reclassifications, gross		(31)		(59)
Tax expense		0		(6)
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	25		59
Tax expense		(6)		(14)
Net current-period other comprehensive (loss) income		(12)		(20)
Ending balance		(1,365)		(1,398)
AOCI Attributable to Noncontrolling Interest [Member]
Beginning balance		20		26
Other comprehensive loss before reclassifications, gross		0		0
Tax expense		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive (loss) income		0		0
Ending balance		20		26
AOCI Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Beginning balance		20		26
Other comprehensive loss before reclassifications, gross		0		0
Tax expense		0		0
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	0		0
Tax expense		0		0
Net current-period other comprehensive (loss) income		0		0
Ending balance		20		26
AOCI Attributable to Parent [Member]
Beginning balance		(1,346)		(1,362)
Other comprehensive loss before reclassifications, gross		(32)		(59)
Tax expense		0		(6)
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	24		58
Tax expense		(5)		(14)
Net current-period other comprehensive (loss) income		(13)		(21)
Ending balance		(1,359)		(1,383)
AOCI Attributable to Parent [Member] | Huntsman International LLC [Member]
Beginning balance		(1,333)		(1,352)
Other comprehensive loss before reclassifications, gross		(31)		(59)
Tax expense		0		(6)
Amounts reclassified from accumulated other comprehensive loss, gross	[3]	25		59
Tax expense		(6)		(14)
Net current-period other comprehensive (loss) income		(12)		(20)
Ending balance		$ (1,345)		$ (1,372)
[1]	Amounts are net of tax of $56 for both March 31, 2021 and January 1, 2021.
[2]	Amounts are net of tax of $74 and $68 as of March 31, 2020 and January 1, 2020, respectively.
[3]	See table below for details about these reclassifications.
[4]	Amounts are net of tax of $43 for both March 31, 2021 and January 1, 2021.
[5]	Amounts are net of tax of $61 and $55 as of March 31, 2020 and January 1, 2020, respectively.
[6]	Amounts are net of tax of $148 and $153 as of March 31, 2021 and January 1, 2021, respectively.
[7]	Amounts are net of tax of $134 and $148 as of March 31, 2020 and January 1, 2020, respectively.
[8]	Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations.
[9]	Amounts are net of tax of $172 and $178 as of March 31, 2021 and January 1, 2021, respectively.
[10]	Amounts are net of tax of $160 and $174 as of March 31, 2020 and January 1, 2020, respectively.

Note 14 - Accumulated Other C_5

Note 14 - Accumulated Other Comprehensive Loss - Reclassification Details (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021		Mar. 31, 2020
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2]	$ (3)		$ (3)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2]	(3)		(3)
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[3]	3		41
Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[3]	3		41
Accumulated Defined Benefit Plans Adjustment, Actuarial Gain (Loss) Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2],[4]	24		20
Accumulated Defined Benefit Plans Adjustment, Actuarial Gain (Loss) Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[2],[4]	25		21
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[6]	24	[5]	58	[7]
Tax expense	[1]	(5)	[5]	(14)	[7]
Total reclassifications for the period	[1]	19		44
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] | Huntsman International LLC [Member]
Amounts reclassified from accumulated other comprehensive loss, gross	[1],[6]	25	[8]	59	[9]
Tax expense	[1]	(6)	[8]	(14)	[9]
Total reclassifications for the period	[1]	$ 19		$ 45
[1]	Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations.
[2]	These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See "Note 12. Employee Benefit Plans."
[3]	In connection with the sale of our Chemical Intermediates Businesses, we recognized $41 of pension and other post-employment benefit settlement losses during the three months ended March 31, 2021.
[4]	Amounts contain approximately $2 and $1 of actuarial losses related to discontinued operations for the three months ended March 31, 2021 and 2020, respectively.
[5]	Amounts are net of tax of $148 and $153 as of March 31, 2021 and January 1, 2021, respectively.
[6]	See table below for details about these reclassifications.
[7]	Amounts are net of tax of $134 and $148 as of March 31, 2020 and January 1, 2020, respectively.
[8]	Amounts are net of tax of $172 and $178 as of March 31, 2021 and January 1, 2021, respectively.
[9]	Amounts are net of tax of $160 and $174 as of March 31, 2020 and January 1, 2020, respectively.

Note 16 - Environmental, Heal_2

Note 16 - Environmental, Health and Safety Matters (Details Textual) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Environmental Costs Recognized, Capitalized in Period	$ 7	$ 6
Accrual for Environmental Loss Contingencies, Ending Balance	4		$ 4
Accrued Environmental Loss Contingencies, Current	1		1
Accrued Environmental Loss Contingencies, Noncurrent	$ 3		$ 3
Maximum Period for Payment of Remediation Liabilities (Year)	30 years
Site Contingency, Number of Former Facility or Third Party Sites with Claims Against Entity for Cleanup Liabilities	9

Note 17 - Stock-based Compens_3

Note 17 - Stock-based Compensation Plans (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Payment Arrangement, Expense, Tax Benefit	$ 1,000	$ 1,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 11.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 3,000	1,000
Proceeds from Stock Options Exercised	3,000	0
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	1,000	$ 0
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 9,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 1 month 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.70%	1.50%
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	44.80%	34.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.20%	1.40%
Share Based Compensation Arrangement by Share Based Payment Award, Performance Period (Year)	3 years	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	76,055
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Target Shares Awards for Grant Number (in shares)	110,542
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 41.93
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Vested Not Issued (in shares)	457,294
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)	30,438
Nonvested Shares [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 47,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 3 months 18 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 18,000	$ 23,000
The 2016 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	6,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
The 2016 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years

Note 17 - Stock-based Compens_4

Note 17 - Stock-based Compensation Plans - Compensation Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Compensation cost	$ 9	$ 7
Huntsman International LLC [Member]
Compensation cost	$ 8	$ 6

Note 17 - Stock-based Compens_5

Note 17 - Stock-based Compensation Plans - Weighted Average of the Assumptions Utilized for Stock Options (Details) - Share-based Payment Arrangement, Option [Member]	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Dividend yield	2.30%	3.00%
Expected volatility	53.30%	53.10%
Risk-free interest rate	0.70%	1.50%
Expected life of stock options granted during the period (in years) (Year)	5 years 10 months 24 days	5 years 10 months 24 days

Note 17 - Stock-based Compens_6

Note 17 - Stock-based Compensation Plans - Summary of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)$ / sharesshares
Outstanding, shares, January 1, 2021 (in shares) | shares	4,815
Outstanding, weighted average exercise price, January 1, 2021 (in dollars per share) | $ / shares	$ 20.37
Granted, shares (in shares) | shares	304
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 28.58
Exercised, shares (in shares) | shares	(275)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 17.94
Forfeited, shares (in shares) | shares	(21)
Forfeited, weighted average exercise price (in dollars per share) | $ / shares	$ 28.12
Outstanding, shares, March 31, 2021 (in shares) | shares	4,823
Outstanding, weighted average exercise price, March 31, 2021 (in dollars per share) | $ / shares	$ 20.99
Outstanding, weighted average remaining contractual term (Year)	6 years 2 months 12 days
Outstanding, aggregate intrinsic value | $	$ 39
Exercisable, shares (in shares) | shares	3,729
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 20.17
Exercisable, weighted average remaining contractual term (Year)	5 years 4 months 24 days
Exercisable, aggregate intrinsic value | $	$ 34

Note 17 - Stock-based Compens_7

Note 17 - Stock-based Compensation Plans - Summary of the Status of Nonvested Shares (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Equity Awards [Member]
Nonvested, shares, January 1, 2021 (in shares) | shares	1,867
Nonvested, weighted average grant-date fair value, January 1, 2021 (in dollars per share) | $ / shares	$ 23.18
Granted, shares (in shares) | shares	831
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 31.17
Vested, shares (in shares) | shares	(512)	[1],[2]
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 28.26
Forfeited, shares (in shares) | shares	(6)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 21.89
Nonvested, shares, March 31, 2021 (in shares) | shares	2,180
Nonvested, weighted average grant-date fair value, March 31, 2021 (in dollars per share) | $ / shares	$ 25.04
Liability Awards [Member]
Nonvested, shares, January 1, 2021 (in shares) | shares	411
Nonvested, weighted average grant-date fair value, January 1, 2021 (in dollars per share) | $ / shares	$ 23.08
Granted, shares (in shares) | shares	184
Granted, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 28.58
Vested, shares (in shares) | shares	(188)
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 24.59
Forfeited, shares (in shares) | shares	(4)
Forfeited, weighted average grant-date fair value (in dollars per share) | $ / shares	$ 22.88
Nonvested, shares, March 31, 2021 (in shares) | shares	403
Nonvested, weighted average grant-date fair value, March 31, 2021 (in dollars per share) | $ / shares	$ 24.89
[1]	A total of 110,542 performance share unit awards are reflected in the vested shares in this table, which represents the target number of performance share unit awards for this grant and were included in the balance at December 31, 2020. During the three months ended March 31, 2021, only 76,055 performance share unit awards with a grant date fair value of $41.93 were issued related to this vest due to the target performance criteria not being met.
[2]	As of March 31, 2021, a total of 457,294 restricted stock units were vested but not yet issued, of which 30,438 vested during the three months ended March 31, 2021. These shares have not been reflected as vested shares in this table because, in accordance with the restricted stock unit agreements, shares of common stock are not issued for vested restricted stock units until termination of employment.

Note 18 - Income Taxes (Details

Note 18 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Equity Securities, FV-NI, Gain (Loss), Total	$ (19)
Equity Investment, Unrealized Gain (Loss)		$ (110)
Income Tax Expense (Benefit), Total	34	7
Huntsman International LLC [Member]
Equity Securities, FV-NI, Gain (Loss), Total	(19)
Equity Investment, Unrealized Gain (Loss)		(110)
Income Tax Expense (Benefit), Total	35	7
Venator Materials PLC [Member]
Equity Securities, FV-NI, Gain (Loss), Total	$ (19)
Equity Investment, Unrealized Gain (Loss)		$ (110)

Note 19 - Earnings Per Share (D

Note 19 - Earnings Per Share (Details Textual) - shares shares in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Payment Arrangement [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	1.1	5.6

Note 19 - Earnings Per Share -

Note 19 - Earnings Per Share - Net Income Per Share (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income (loss) from continuing operations attributable to Huntsman Corporation	$ 82	$ (72)
Net income attributable to Huntsman Corporation	$ 83	$ 705
Weighted average shares outstanding (in shares)	220.4	223.2
Stock-based awards (in shares)	2.2	0
Total weighted average shares outstanding, including dilutive shares (in shares)	222.6	223.2

Note 20 - Operating Segment I_3

Note 20 - Operating Segment Information (Details Textual)	3 Months Ended
	Mar. 31, 2021
Number of Reportable Segments	4
Number of Operating Segments	4

Note 20 - Operating Segment I_4

Note 20 - Operating Segment Information - Financial Information By Segment (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Total revenues	[1]	$ 1,837	$ 1,593
Segment adjusted EBITDA	[2]	289	165
Interest expense, net—continuing operations		(19)	(18)
Income tax expense—continuing operations		(34)	(7)
Income tax expense		0	(238)
Depreciation and amortization—continuing operations		(74)	(67)
Net income attributable to noncontrolling interests		17	3
Business acquisition and integration expenses and purchase accounting inventory adjustments		(9)	(13)
EBITDA from discontinued operations		1	1,015
Equity Securities, FV-NI, Gain (Loss), Total		(19)
Equity Investment, Unrealized Gain (Loss)			(110)
Certain legal and other settlements and related expenses		(2)	(2)
Gain on sale of businesses/assets		0	2
Income from transition services arrangements		1	0
Certain nonrecurring information technology project implementation costs		(1)	(1)
Amortization of pension and postretirement actuarial losses		(22)	(18)
Plant incident remediation costs		(4)	0
Restructuring, impairment and plant closing and transition costs		(24)	(3)
Net income		100	708
Income tax expense—continuing operations		(34)	(7)
Huntsman International LLC [Member]
Total revenues		1,837	1,593
Segment adjusted EBITDA		292	166
Interest expense, net—continuing operations		(19)	(20)
Income tax expense—continuing operations		(35)	(7)
Income tax expense		0	(238)
Depreciation and amortization—continuing operations		(73)	(67)
Net income attributable to noncontrolling interests		17	3
Business acquisition and integration expenses and purchase accounting inventory adjustments		(9)	(13)
EBITDA from discontinued operations		1	1,015
Equity Securities, FV-NI, Gain (Loss), Total		(19)
Equity Investment, Unrealized Gain (Loss)			(110)
Certain legal and other settlements and related expenses		(2)	(2)
Gain on sale of businesses/assets		0	2
Income from transition services arrangements		1	0
Certain nonrecurring information technology project implementation costs		(1)	(1)
Amortization of pension and postretirement actuarial losses		(23)	(18)
Plant incident remediation costs		(4)	0
Restructuring, impairment and plant closing and transition costs		(24)	(3)
Net income		102	707
Income tax expense—continuing operations		(35)	(7)
Restructuring, impairment and plant closing and transition costs		(24)	(3)
Consolidation, Eliminations [Member]
Total revenues		(7)	(8)
Segment Reconciling Items [Member]
Total revenues	[1]	(7)	(8)
Segment adjusted EBITDA	[2],[3]	(50)	(45)
Segment Reconciling Items [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2],[3]	(47)	(44)
Polyurethanes [Member] | Operating Segments [Member]
Total revenues	[1]	1,068	888
Segment adjusted EBITDA	[2]	207	84
Polyurethanes [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	207	84
Performance Products [Member] | Operating Segments [Member]
Total revenues	[1]	305	292
Segment adjusted EBITDA	[2]	63	58
Performance Products [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	63	58
Advanced Materials [Member] | Operating Segments [Member]
Total revenues	[1]	278	241
Segment adjusted EBITDA	[2]	44	48
Advanced Materials [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	44	48
Textile Effects [Member] | Operating Segments [Member]
Total revenues	[1]	193	180
Segment adjusted EBITDA	[2]	25	20
Textile Effects [Member] | Operating Segments [Member] | Huntsman International LLC [Member]
Segment adjusted EBITDA	[2]	$ 25	$ 20
[1]	Geographic information for revenues is based upon countries into which product is sold.
[2]	We use segment adjusted EBITDA as the measure of each segment's profit or loss. We believe that segment adjusted EBITDA more accurately reflects what the chief operating decision maker uses to make decisions about resources to be allocated to the segments and assess their financial performance. Segment adjusted EBITDA is defined as net income of Huntsman Corporation or Huntsman International, as appropriate, before interest, income tax, depreciation and amortization, net income attributable to noncontrolling interests and certain Corporate and other items, as well as eliminating the following adjustments: (a) business acquisition and integration expenses and purchase accounting inventory adjustments; (b) EBITDA from discontinued operations; (c) fair value adjustments to Venator investment; (d) certain legal and other settlements and related expenses; (e) gain on sale of businesses/assets; (f) income from transition services arrangements related to the sale of our Chemical Intermediates Businesses to Indorama; (g) certain nonrecurring information technology project implementation costs; (h) amortization of pension and postretirement actuarial losses; (i) plant incident remediation costs; and (j) restructuring, impairment, plant closing and transition costs.
[3]	Corporate and other includes unallocated corporate overhead, unallocated foreign exchange gains and losses, LIFO inventory valuation reserve adjustments, loss on early extinguishment of debt, unallocated restructuring, impairment and plant closing costs, nonoperating income and expense and gains and losses on the disposition of corporate assets.